NetBSD-5.0.2/sys/netisdn/i4b_l4if.c
/*
* Copyright (c) 1997, 2000 Hellmuth Michaelis. 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.
*
*---------------------------------------------------------------------------
*
* i4b_l4if.c - Layer 3 interface to Layer 4
* -------------------------------------------
*
* $Id: i4b_l4if.c,v 1.19 2005/12/11 12:25:06 christos Exp $
*
* $FreeBSD$
*
* last edit-date: [Fri Jan 5 11:33:47 2001]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i4b_l4if.c,v 1.19 2005/12/11 12:25:06 christos Exp $");
#ifdef __FreeBSD__
#include "i4bq931.h"
#else
#define NI4BQ931 1
#endif
#if NI4BQ931 > 0
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
#include <sys/callout.h>
#endif
#ifdef __FreeBSD__
#include <machine/i4b_debug.h>
#include <machine/i4b_ioctl.h>
#include <machine/i4b_cause.h>
#else
#include <netisdn/i4b_debug.h>
#include <netisdn/i4b_ioctl.h>
#include <netisdn/i4b_cause.h>
#endif
#include <netisdn/i4b_isdnq931.h>
#include <netisdn/i4b_l2.h>
#include <netisdn/i4b_l1l2.h>
#include <netisdn/i4b_l3l4.h>
#include <netisdn/i4b_mbuf.h>
#include <netisdn/i4b_global.h>
#include <netisdn/i4b_l3.h>
#include <netisdn/i4b_l3fsm.h>
#include <netisdn/i4b_q931.h>
#include <netisdn/i4b_l4.h>
void n_connect_request(struct call_desc *cd);
void n_connect_response(struct call_desc *cd, int response, int cause);
void n_disconnect_request(struct call_desc *cd, int cause);
void n_alert_request(struct call_desc *cd);
void n_mgmt_command(struct isdn_l3_driver *drv, int cmd, void *parm);
/*---------------------------------------------------------------------------*
* i4b_mdl_status_ind - status indication from lower layers
*---------------------------------------------------------------------------*/
int
i4b_mdl_status_ind(struct isdn_l3_driver *d, int status, int parm)
{
int sendup, update_leds = 0;
int i;
NDBGL3(L3_MSG, "isdnif = %d, status = %d, parm = %d",
d->isdnif, status, parm);
switch(status)
{
case STI_ATTACH:
if (parm) {
NDBGL3(L3_MSG, "STI_ATTACH: attaching isdnif %d", d->isdnif);
} else {
NDBGL3(L3_MSG, "STI_ATTACH: dettaching isdnif %d", d->isdnif);
}
break;
case STI_L1STAT:
i4b_l4_l12stat(d, 1, parm);
update_leds = 1;
NDBGL3(L3_MSG, "STI_L1STAT: isdnif %d layer 1 = %s", d->isdnif, status ? "up" : "down");
break;
case STI_L2STAT:
i4b_l4_l12stat(d, 2, parm);
update_leds = 1;
NDBGL3(L3_MSG, "STI_L2STAT: isdnif %d layer 2 = %s", d->isdnif, status ? "up" : "down");
break;
case STI_TEIASG:
d->tei = parm;
i4b_l4_teiasg(d, parm);
update_leds = 1;
NDBGL3(L3_MSG, "STI_TEIASG: isdnif %d TEI = %d = 0x%02x", d->isdnif, parm, parm);
break;
case STI_PDEACT: /* L1 T4 timeout */
NDBGL3(L3_ERR, "STI_PDEACT: isdnif %d TEI = %d = 0x%02x", d->isdnif, parm, parm);
update_leds = 1;
sendup = 0;
for(i=0; i < num_call_desc; i++)
{
if(call_desc[i].isdnif == d->isdnif)
{
i4b_l3_stop_all_timers(&(call_desc[i]));
if(call_desc[i].cdid != CDID_UNUSED) {
sendup++;
call_desc[i].cdid = CDID_UNUSED;
}
}
}
d->dl_est = DL_DOWN;
for (i = 0; i < d->nbch; i++)
d->bch_state[i] = BCH_ST_FREE;
d->tei = -1;
if(sendup)
{
i4b_l4_pdeact(d, sendup);
}
break;
case STI_NOL1ACC: /* no outgoing access to S0 */
NDBGL3(L3_ERR, "STI_NOL1ACC: isdnif %d no outgoing access to S0", d->isdnif);
update_leds = 1;
for(i=0; i < num_call_desc; i++)
{
if(call_desc[i].isdnif == d->isdnif)
{
if(call_desc[i].cdid != CDID_UNUSED)
{
SET_CAUSE_TYPE(call_desc[i].cause_in, CAUSET_I4B);
SET_CAUSE_VAL(call_desc[i].cause_in, CAUSE_I4B_L1ERROR);
i4b_l4_disconnect_ind(&(call_desc[i]));
}
}
}
d->dl_est = DL_DOWN;
for (i = 0; i < d->nbch; i++)
d->bch_state[i] = BCH_ST_FREE;
d->tei = -1;
break;
default:
NDBGL3(L3_ERR, "ERROR, isdnif %d, unknown status value %d!", d->isdnif, status);
break;
}
if (update_leds && d != NULL)
update_controller_leds(d);
return(0);
}
void
update_controller_leds(struct isdn_l3_driver *d)
{
intptr_t leds = 0;
if (d->tei != -1)
leds |= CMRLEDS_TEI;
if (d->bch_state[CHAN_B1] != BCH_ST_FREE)
leds |= CMRLEDS_B0;
if (d->bch_state[CHAN_B2] != BCH_ST_FREE)
leds |= CMRLEDS_B1;
d->l3driver->N_MGMT_COMMAND(d, CMR_SETLEDS, (void*)leds);
}
/*---------------------------------------------------------------------------*
* send command to the lower layers
*---------------------------------------------------------------------------*/
void
n_mgmt_command(struct isdn_l3_driver *d, int cmd, void *parm)
{
int i;
switch(cmd)
{
case CMR_DOPEN:
NDBGL3(L3_MSG, "CMR_DOPEN for isdnif %d", d->isdnif);
for(i=0; i < num_call_desc; i++)
{
if(call_desc[i].isdnif == d->isdnif)
{
call_desc[i].cdid = CDID_UNUSED;
}
}
d->dl_est = DL_DOWN;
for (i = 0; i < d->nbch; i++)
d->bch_state[i] = BCH_ST_FREE;
d->tei = -1;
break;
case CMR_DCLOSE:
NDBGL3(L3_MSG, "CMR_DCLOSE for isdnif %d", d->isdnif);
break;
default:
NDBGL3(L3_MSG, "unknown cmd %d for isdnif %d",
cmd, d->isdnif);
break;
}
i4b_mdl_command_req(d, cmd, parm);
}
/*---------------------------------------------------------------------------*
* handle connect request message from userland
*---------------------------------------------------------------------------*/
void
n_connect_request(struct call_desc *cd)
{
next_l3state(cd, EV_SETUPRQ);
}
/*---------------------------------------------------------------------------*
* handle setup response message from userland
*---------------------------------------------------------------------------*/
void
n_connect_response(struct call_desc *cd, int response, int cause)
{
struct isdn_l3_driver *d = cd->l3drv;
int chstate;
T400_stop(cd);
cd->response = response;
cd->cause_out = cause;
switch(response)
{
case SETUP_RESP_ACCEPT:
next_l3state(cd, EV_SETACRS);
chstate = BCH_ST_USED;
break;
case SETUP_RESP_REJECT:
next_l3state(cd, EV_SETRJRS);
chstate = BCH_ST_FREE;
break;
case SETUP_RESP_DNTCRE:
next_l3state(cd, EV_SETDCRS);
chstate = BCH_ST_FREE;
break;
default: /* failsafe */
next_l3state(cd, EV_SETDCRS);
chstate = BCH_ST_FREE;
NDBGL3(L3_ERR, "unknown response, doing SETUP_RESP_DNTCRE");
break;
}
if((cd->channelid >= 0) && (cd->channelid < d->nbch))
{
d->bch_state[cd->channelid] = chstate;
/*
* XXX: don't call l2 function for active cards
*/
if (d->l3driver->N_DOWNLOAD == NULL)
i4b_l2_channel_set_state(cd->l3drv,
cd->channelid, chstate);
update_controller_leds(d);
}
else
{
NDBGL3(L3_MSG, "Warning, invalid channelid %d, response = %d\n", cd->channelid, response);
}
}
/*---------------------------------------------------------------------------*
* handle disconnect request message from userland
*---------------------------------------------------------------------------*/
void
n_disconnect_request(struct call_desc *cd, int cause)
{
cd->cause_out = cause;
next_l3state(cd, EV_DISCRQ);
}
/*---------------------------------------------------------------------------*
* handle alert request message from userland
*---------------------------------------------------------------------------*/
void
n_alert_request(struct call_desc *cd)
{
next_l3state(cd, EV_ALERTRQ);
}
#endif /* NI4BQ931 > 0 */