19c749625f
ISDN4BSD is the work of our brand-new comitter: Hellmuth Michaelis, who has done a tremendous amount of work to bring us this far. There are still some outstanding issues and files to bring into the tree, and for now it will be needed to pick up all the extra docs from the isdn4bsd release. It is probably also a very good idea to subscribe to the isdn@freebsd.org mailing list before you try this out. These files correspond to release "beta Version 0.70.00 / December 1998" from Hellmuth.
340 lines
9.7 KiB
C
340 lines
9.7 KiB
C
/*
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* Copyright (c) 1997, 1998 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_l4if.c - Layer 3 interface to Layer 4
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* -------------------------------------------
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*
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* $Id: i4b_l4if.c,v 1.17 1998/12/05 18:05:36 hm Exp $
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*
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* last edit-date: [Sat Dec 5 18:33:16 1998]
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*
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*---------------------------------------------------------------------------*/
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#ifdef __FreeBSD__
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#include "i4bq931.h"
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#else
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#define NI4BQ931 1
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#endif
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#if NI4BQ931 > 0
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#include <sys/param.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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#include <sys/ioccom.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#ifdef __FreeBSD__
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#include <machine/i4b_cause.h>
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#else
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#include <i4b/i4b_debug.h>
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#include <i4b/i4b_ioctl.h>
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#include <i4b/i4b_cause.h>
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#endif
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#include <i4b/include/i4b_isdnq931.h>
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#include <i4b/include/i4b_l2l3.h>
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#include <i4b/include/i4b_l3l4.h>
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#include <i4b/include/i4b_mbuf.h>
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#include <i4b/include/i4b_global.h>
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#include <i4b/layer3/i4b_l3.h>
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#include <i4b/layer3/i4b_l3fsm.h>
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#include <i4b/layer3/i4b_q931.h>
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#include <i4b/layer4/i4b_l4.h>
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extern void isic_settrace(int unit, int val); /*XXX*/
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extern int isic_gettrace(int unit); /*XXX*/
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static void n_connect_request(u_int cdid);
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static void n_connect_response(u_int cdid, int response, int cause);
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static void n_disconnect_request(u_int cdid, int cause);
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static void n_alert_request(u_int cdid);
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static void n_mgmt_command(int unit, int cmd, int parm);
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/*---------------------------------------------------------------------------*
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* i4b_mdl_status_ind - status indication from lower layers
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*---------------------------------------------------------------------------*/
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int
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i4b_mdl_status_ind(int unit, int status, int parm)
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{
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int sendup;
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int i;
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DBGL3(L3_MSG, "i4b_mdl_status_ind", ("unit = %d, status = %d, parm = %d\n", unit, status, parm));
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switch(status)
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{
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case STI_ATTACH:
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DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_ATTACH: attaching unit %d to controller %d\n", unit, nctrl));
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/* init function pointers */
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ctrl_desc[nctrl].N_CONNECT_REQUEST = n_connect_request;
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ctrl_desc[nctrl].N_CONNECT_RESPONSE = n_connect_response;
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ctrl_desc[nctrl].N_DISCONNECT_REQUEST = n_disconnect_request;
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ctrl_desc[nctrl].N_ALERT_REQUEST = n_alert_request;
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ctrl_desc[nctrl].N_SET_TRACE = isic_settrace;
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ctrl_desc[nctrl].N_GET_TRACE = isic_gettrace;
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ctrl_desc[nctrl].N_DOWNLOAD = NULL; /* only used by active cards */
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ctrl_desc[nctrl].N_DIAGNOSTICS = NULL; /* only used by active cards */
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ctrl_desc[nctrl].N_MGMT_COMMAND = n_mgmt_command;
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/* init type and unit */
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ctrl_desc[nctrl].unit = unit;
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ctrl_desc[nctrl].ctrl_type = CTRL_PASSIVE;
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ctrl_desc[nctrl].card_type = parm;
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/* state fields */
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ctrl_desc[nctrl].dl_est = DL_DOWN;
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ctrl_desc[nctrl].bch_state[CHAN_B1] = BCH_ST_FREE;
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ctrl_desc[nctrl].bch_state[CHAN_B2] = BCH_ST_FREE;
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ctrl_desc[nctrl].tei = -1;
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/* init unit to controller table */
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utoc_tab[unit] = nctrl;
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/* increment no. of controllers */
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nctrl++;
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break;
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case STI_L1STAT:
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i4b_l4_l12stat(unit, 1, parm);
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DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_L1STAT: unit %d layer 1 = %s\n", unit, status ? "up" : "down"));
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break;
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case STI_L2STAT:
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i4b_l4_l12stat(unit, 2, parm);
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DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_L2STAT: unit %d layer 2 = %s\n", unit, status ? "up" : "down"));
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break;
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case STI_TEIASG:
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ctrl_desc[unit].tei = parm;
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i4b_l4_teiasg(unit, parm);
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DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_TEIASG: unit %d TEI = %d = 0x%02x\n", unit, parm, parm));
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break;
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case STI_PDEACT: /* L1 T4 timeout */
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DBGL3(L3_ERR, "i4b_mdl_status_ind", ("STI_PDEACT: unit %d TEI = %d = 0x%02x\n", unit, parm, parm));
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sendup = 0;
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for(i=0; i < N_CALL_DESC; i++)
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{
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if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) &&
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(ctrl_desc[call_desc[i].controller].unit == unit))
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{
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if(call_desc[i].cdid != CDID_UNUSED)
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sendup++;
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}
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}
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ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].tei = -1;
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if(sendup)
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i4b_l4_pdeact(unit, sendup);
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break;
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case STI_NOL1ACC: /* no outgoing access to S0 */
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DBGL3(L3_ERR, "i4b_mdl_status_ind", ("STI_NOL1ACC: unit %d no outgoing access to S0\n", unit));
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for(i=0; i < N_CALL_DESC; i++)
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{
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if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) &&
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(ctrl_desc[call_desc[i].controller].unit == unit))
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{
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if(call_desc[i].cdid != CDID_UNUSED)
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{
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SET_CAUSE_TYPE(call_desc[i].cause_in, CAUSET_I4B);
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SET_CAUSE_VAL(call_desc[i].cause_in, CAUSE_I4B_L1ERROR);
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i4b_l4_disconnect_ind(&(call_desc[i]));
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}
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}
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}
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ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].tei = -1;
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break;
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default:
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DBGL3(L3_ERR, "i4b_mdl_status_ind", ("ERROR, unit %d, unknown status value %d!\n", unit, status));
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break;
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}
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return(0);
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}
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/*---------------------------------------------------------------------------*
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* send command to the lower layers
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*---------------------------------------------------------------------------*/
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static void
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n_mgmt_command(int unit, int cmd, int parm)
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{
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int i;
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switch(cmd)
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{
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case CMR_DOPEN:
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DBGL3(L3_MSG, "n_mgmt_command", ("CMR_DOPEN for unit %d\n", unit));
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for(i=0; i < N_CALL_DESC; i++)
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{
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if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) &&
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(ctrl_desc[call_desc[i].controller].unit == unit))
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{
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call_desc[i].cdid = CDID_UNUSED;
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}
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}
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ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE;
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ctrl_desc[utoc_tab[unit]].tei = -1;
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break;
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case CMR_DCLOSE:
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DBGL3(L3_MSG, "n_mgmt_command", ("CMR_DCLOSE for unit %d\n", unit));
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break;
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default:
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break;
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}
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MDL_Command_Req(unit, cmd, parm);
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}
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/*---------------------------------------------------------------------------*
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* handle connect request message from userland
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*---------------------------------------------------------------------------*/
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static void
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n_connect_request(u_int cdid)
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{
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call_desc_t *cd;
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cd = cd_by_cdid(cdid);
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next_l3state(cd, EV_SETUPRQ);
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}
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/*---------------------------------------------------------------------------*
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* handle setup response message from userland
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*---------------------------------------------------------------------------*/
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static void
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n_connect_response(u_int cdid, int response, int cause)
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{
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call_desc_t *cd;
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int chstate;
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cd = cd_by_cdid(cdid);
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T400_stop(cd);
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cd->response = response;
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cd->cause_out = cause;
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switch(response)
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{
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case SETUP_RESP_ACCEPT:
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next_l3state(cd, EV_SETACRS);
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chstate = BCH_ST_USED;
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break;
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case SETUP_RESP_REJECT:
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next_l3state(cd, EV_SETRJRS);
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chstate = BCH_ST_FREE;
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break;
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case SETUP_RESP_DNTCRE:
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next_l3state(cd, EV_SETDCRS);
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chstate = BCH_ST_FREE;
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break;
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default: /* failsafe */
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next_l3state(cd, EV_SETDCRS);
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chstate = BCH_ST_FREE;
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DBGL3(L3_ERR, "n_connect_response", ("unknown response, doing SETUP_RESP_DNTCRE"));
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break;
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}
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if((cd->channelid == CHAN_B1) || (cd->channelid == CHAN_B2))
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{
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ctrl_desc[cd->controller].bch_state[cd->channelid] = chstate;
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}
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else
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{
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DBGL3(L3_ERR, "n_connect_response", ("ERROR, invalid channel %d\n", cd->channelid));
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}
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}
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/*---------------------------------------------------------------------------*
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* handle disconnect request message from userland
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*---------------------------------------------------------------------------*/
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static void
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n_disconnect_request(u_int cdid, int cause)
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{
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call_desc_t *cd;
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cd = cd_by_cdid(cdid);
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cd->cause_out = cause;
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next_l3state(cd, EV_DISCRQ);
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}
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/*---------------------------------------------------------------------------*
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* handle alert request message from userland
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*---------------------------------------------------------------------------*/
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static void
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n_alert_request(u_int cdid)
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{
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call_desc_t *cd;
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cd = cd_by_cdid(cdid);
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next_l3state(cd, EV_ALERTRQ);
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}
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#endif /* NI4BQ931 > 0 */
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