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NetBSD/usr.sbin/isdn/isdnd/controller.c

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/*
* 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 daemon - controller state support routines
* ----------------------------------------------
*
* $Id: controller.c,v 1.4 2002/03/30 07:12:41 martin Exp $
*
* $FreeBSD$
*
* last edit-date: [Mon Oct 9 14:37:34 2000]
*
*---------------------------------------------------------------------------*/
#include "isdnd.h"
static int
init_controller_state(int controller, const char *devname, const char *cardname, int tei);
/*
* add a single controller
*/
void
init_new_controller(int bri)
{
msg_ctrl_info_req_t mcir;
memset(&mcir, 0, sizeof mcir);
mcir.controller = bri;
if((ioctl(isdnfd, I4B_CTRL_INFO_REQ, &mcir)) < 0)
return;
if((init_controller_state(bri, mcir.devname, mcir.cardname, mcir.tei)) == ERROR)
{
log(LL_ERR, "init_new_controller: init_controller_state for controller %d failed", bri);
do_exit(1);
}
}
/*---------------------------------------------------------------------------*
* init controller state array
*---------------------------------------------------------------------------*/
void
init_controller(void)
{
int i;
int max = 0;
msg_ctrl_info_req_t mcir;
remove_all_ctrl_state();
for(i=0; i <= max; i++)
{
mcir.controller = i;
if((ioctl(isdnfd, I4B_CTRL_INFO_REQ, &mcir)) < 0)
continue;
max = mcir.maxbri;
/* init controller tab */
if((init_controller_state(i, mcir.devname, mcir.cardname, mcir.tei)) == ERROR)
{
log(LL_ERR, "init_controller: init_controller_state for controller %d failed", i);
do_exit(1);
}
}
DBGL(DL_RCCF, (log(LL_DBG, "init_controller: found %d ISDN controller(s)", max)));
}
/*--------------------------------------------------------------------------*
* init controller state table entry
*--------------------------------------------------------------------------*/
static int
init_controller_state(int controller, const char *devname, const char *cardname, int tei)
{
struct isdn_ctrl_state *ctrl;
ctrl = malloc(sizeof *ctrl);
if (ctrl == NULL) {
log(LL_ERR, "init_controller_state: out of memory");
return(ERROR);
}
/* init controller state entry */
memset(ctrl, 0, sizeof *ctrl);
strncpy(ctrl->device_name,
devname,
sizeof(ctrl->device_name)-1);
strncpy(ctrl->controller,
cardname,
sizeof(ctrl->controller)-1);
ctrl->bri = controller;
ctrl->protocol = PROTOCOL_DSS1;
ctrl->state = CTRL_UP;
ctrl->stateb1 = CHAN_IDLE;
ctrl->stateb2 = CHAN_IDLE;
ctrl->freechans = MAX_CHANCTRL;
ctrl->tei = tei;
ctrl->l1stat = LAYER_IDLE;
ctrl->l2stat = LAYER_IDLE;
DBGL(DL_RCCF, (log(LL_DBG, "init_controller_state: controller %d (%s) is %s",
controller, devname, cardname)));
/* add to list */
add_ctrl_state(ctrl);
return(GOOD);
}
/*--------------------------------------------------------------------------*
* init active controller
*--------------------------------------------------------------------------*/
void
init_active_controller(void)
{
/* XXX - replace by something usefull */
#if 0
int ret;
int unit = 0;
int controller;
char cmdbuf[MAXPATHLEN+128];
for(controller = 0; controller < ncontroller; controller++)
{
if(isdn_ctrl_tab[controller].ctrl_type == CTRL_TINADD)
{
DBGL(DL_RCCF, (log(LL_DBG, "init_active_controller, tina-dd %d: executing [%s %d]", unit, tinainitprog, unit)));
snprintf(cmdbuf, sizeof(cmdbuf), "%s %d", tinainitprog, unit);
if((ret = system(cmdbuf)) != 0)
{
log(LL_ERR, "init_active_controller, tina-dd %d: %s returned %d!", unit, tinainitprog, ret);
do_exit(1);
}
}
}
#endif
}
void
init_single_controller_protocol ( struct isdn_ctrl_state *ctrl )
{
msg_prot_ind_t mpi;
memset(&mpi, 0, sizeof mpi);
mpi.controller = ctrl->bri;
mpi.protocol = ctrl->protocol;
if((ioctl(isdnfd, I4B_PROT_IND, &mpi)) < 0)
{
log(LL_ERR, "init_single_controller_protocol: ioctl I4B_PROT_IND failed: %s", strerror(errno));
do_exit(1);
}
}
/*--------------------------------------------------------------------------*
* init controller D-channel ISDN protocol
*--------------------------------------------------------------------------*/
void
init_controller_protocol(void)
{
struct isdn_ctrl_state *ctrl;
for (ctrl = get_first_ctrl_state(); ctrl; ctrl = NEXT_CTRL(ctrl))
init_single_controller_protocol(ctrl);
}
/*--------------------------------------------------------------------------*
* set controller state to UP/DOWN
*--------------------------------------------------------------------------*/
int
set_controller_state(struct isdn_ctrl_state *ctrl, int state)
{
if (ctrl == NULL) {
log(LL_ERR, "set_controller_state: invalid controller");
return(ERROR);
}
if (state == CTRL_UP) {
ctrl->state = CTRL_UP;
DBGL(DL_CNST, (log(LL_DBG, "set_controller_state: controller [%d] set UP!", ctrl->bri)));
}
else if (state == CTRL_DOWN)
{
ctrl->state = CTRL_DOWN;
DBGL(DL_CNST, (log(LL_DBG, "set_controller_state: controller [%d] set DOWN!", ctrl->bri)));
}
else
{
log(LL_ERR, "set_controller_state: invalid controller state [%d]!", state);
return(ERROR);
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* get controller state
*--------------------------------------------------------------------------*/
int
get_controller_state(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
log(LL_ERR, "set_controller_state: invalid controller");
return(ERROR);
}
return (ctrl->state);
}
/*--------------------------------------------------------------------------*
* decrement number of free channels for controller
*--------------------------------------------------------------------------*/
int
decr_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
log(LL_ERR, "decr_free_channels: invalid controller!");
return(ERROR);
}
if (ctrl->freechans > 0)
{
ctrl->freechans--;
DBGL(DL_CNST, (log(LL_DBG, "decr_free_channels: ctrl %d, now %d chan free", ctrl->bri, ctrl->freechans)));
return(GOOD);
}
else
{
log(LL_ERR, "decr_free_channels: controller [%d] already 0 free chans!", ctrl->bri);
return(ERROR);
}
}
/*--------------------------------------------------------------------------*
* increment number of free channels for controller
*--------------------------------------------------------------------------*/
int
incr_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
log(LL_ERR, "incr_free_channels: invalid controller!");
return(ERROR);
}
if (ctrl->freechans < MAX_CHANCTRL)
{
ctrl->freechans++;
DBGL(DL_CNST, (log(LL_DBG, "incr_free_channels: ctrl %d, now %d chan free", ctrl->bri, ctrl->freechans)));
return(GOOD);
}
else
{
log(LL_ERR, "incr_free_channels: controller [%d] already 2 free chans!", ctrl->bri);
return(ERROR);
}
}
/*--------------------------------------------------------------------------*
* get number of free channels for controller
*--------------------------------------------------------------------------*/
int
get_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
log(LL_ERR, "get_free_channels: invalid controller!");
return(ERROR);
}
DBGL(DL_CNST, (log(LL_DBG, "get_free_channels: ctrl %d, %d chan free", ctrl->bri, ctrl->freechans)));
return (ctrl->freechans);
}
/*--------------------------------------------------------------------------*
* set channel state to busy
*--------------------------------------------------------------------------*/
int
set_channel_busy(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
log(LL_ERR, "set_channel_busy: invalid controller");
return(ERROR);
}
switch(channel)
{
case CHAN_B1:
if (ctrl->stateb1 == CHAN_RUN) {
DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B1 already busy!", ctrl->bri)));
}
else
{
ctrl->stateb1 = CHAN_RUN;
DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B1 set to BUSY!", ctrl->bri)));
}
break;
case CHAN_B2:
if (ctrl->stateb2 == CHAN_RUN)
{
DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B2 already busy!", ctrl->bri)));
}
else
{
ctrl->stateb2 = CHAN_RUN;
DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B2 set to BUSY!", ctrl->bri)));
}
break;
default:
log(LL_ERR, "set_channel_busy: controller [%d], invalid channel [%d]!", ctrl->bri, channel);
return(ERROR);
break;
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* set channel state to idle
*--------------------------------------------------------------------------*/
int
set_channel_idle(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
log(LL_ERR, "set_channel_idle: invalid controller");
return(ERROR);
}
switch(channel)
{
case CHAN_B1:
if (ctrl->stateb1 == CHAN_IDLE) {
DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B1 already idle!", ctrl->bri)));
} else {
ctrl->stateb1 = CHAN_IDLE;
DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B1 set to IDLE!", ctrl->bri)));
}
break;
case CHAN_B2:
if (ctrl->stateb2 == CHAN_IDLE) {
DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B2 already idle!", ctrl->bri)));
} else {
ctrl->stateb2 = CHAN_IDLE;
DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B2 set to IDLE!", ctrl->bri)));
}
break;
default:
DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d], invalid channel [%d]!", ctrl->bri, channel)));
return(ERROR);
break;
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* return channel state
*--------------------------------------------------------------------------*/
int
ret_channel_state(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
log(LL_ERR, "ret_channel_state: invalid controller!");
return(ERROR);
}
switch(channel)
{
case CHAN_B1:
return (ctrl->stateb1);
break;
case CHAN_B2:
return (ctrl->stateb2);
break;
default:
log(LL_ERR, "ret_channel_state: controller [%d], invalid channel [%d]!", ctrl->bri, channel);
return(ERROR);
break;
}
return(ERROR);
}
/* EOF */
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