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NetBSD/sys/netisdn/i4b_i4bdrv.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_i4bdrv.c - i4b userland interface driver
* --------------------------------------------
*
* $Id: i4b_i4bdrv.c,v 1.31 2007/03/04 06:03:30 christos Exp $
*
* $FreeBSD$
*
* last edit-date: [Fri Jan 5 11:33:47 2001]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i4b_i4bdrv.c,v 1.31 2007/03/04 06:03:30 christos Exp $");
#include "isdn.h"
#if NISDN > 0
#include <sys/param.h>
#if defined(__FreeBSD__)
#include <sys/ioccom.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#else
#include <sys/ioctl.h>
#endif
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <net/if.h>
#ifdef __FreeBSD__
#if defined(__FreeBSD__) && __FreeBSD__ == 3
#include "opt_devfs.h"
#endif
#ifdef DEVFS
#include <sys/devfsext.h>
#endif
#endif /* __FreeBSD__*/
#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_l3l4.h>
#include <netisdn/i4b_mbuf.h>
#include <netisdn/i4b_global.h>
#include <netisdn/i4b_l4.h>
#ifdef OS_USES_POLL
#include <sys/poll.h>
#endif
struct selinfo select_rd_info;
static struct ifqueue i4b_rdqueue;
static int openflag = 0;
static int selflag = 0;
static int readflag = 0;
#if defined(__FreeBSD__) && __FreeBSD__ == 3
#ifdef DEVFS
static void *devfs_token;
#endif
#endif
#ifndef __FreeBSD__
#define PDEVSTATIC /* - not static - */
PDEVSTATIC void isdnattach __P((void));
PDEVSTATIC int isdnopen __P((dev_t dev, int flag, int fmt, struct lwp *l));
PDEVSTATIC int isdnclose __P((dev_t dev, int flag, int fmt, struct lwp *l));
PDEVSTATIC int isdnread __P((dev_t dev, struct uio *uio, int ioflag));
PDEVSTATIC int isdnioctl __P((dev_t dev, u_long cmd, void *data, int flag, struct lwp *l));
#ifdef OS_USES_POLL
PDEVSTATIC int isdnpoll __P((dev_t dev, int events, struct lwp *l));
PDEVSTATIC int isdnkqfilter __P((dev_t dev, struct knote *kn));
#else
PDEVSTATIC int isdnselect __P((dev_t dev, int rw, struct lwp *l));
#endif
#endif /* #ifndef __FreeBSD__ */
#if BSD > 199306 && defined(__FreeBSD__)
#define PDEVSTATIC static
PDEVSTATIC d_open_t i4bopen;
PDEVSTATIC d_close_t i4bclose;
PDEVSTATIC d_read_t i4bread;
PDEVSTATIC d_ioctl_t i4bioctl;
#ifdef OS_USES_POLL
PDEVSTATIC d_poll_t i4bpoll;
#define POLLFIELD i4bpoll
#else
PDEVSTATIC d_select_t i4bselect;
#define POLLFIELD i4bselect
#endif
#define CDEV_MAJOR 60
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
static struct cdevsw i4b_cdevsw = {
/* open */ i4bopen,
/* close */ i4bclose,
/* read */ i4bread,
/* write */ nowrite,
/* ioctl */ i4bioctl,
/* poll */ POLLFIELD,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "i4b",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* bmaj */ -1
};
#else
static struct cdevsw i4b_cdevsw = {
i4bopen, i4bclose, i4bread, nowrite,
i4bioctl, nostop, nullreset, nodevtotty,
POLLFIELD, nommap, NULL, "i4b", NULL, -1
};
#endif
PDEVSTATIC void i4battach(void *);
PSEUDO_SET(i4battach, i4b_i4bdrv);
static void
i4b_drvinit(void *unused)
{
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
cdevsw_add(&i4b_cdevsw);
#else
static int i4b_devsw_installed = 0;
dev_t dev;
if( ! i4b_devsw_installed )
{
dev = makedev(CDEV_MAJOR,0);
cdevsw_add(&dev,&i4b_cdevsw,NULL);
i4b_devsw_installed = 1;
}
#endif
}
SYSINIT(i4bdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,i4b_drvinit,NULL)
#endif /* BSD > 199306 && defined(__FreeBSD__) */
#ifdef __NetBSD__
const struct cdevsw isdn_cdevsw = {
isdnopen, isdnclose, isdnread, nowrite, isdnioctl,
nostop, notty, isdnpoll, nommap, isdnkqfilter, D_OTHER
};
#endif /* __NetBSD__ */
#ifdef __bsdi__
#include <sys/device.h>
int i4bmatch(struct device *parent, struct cfdata *cf, void *aux);
void dummy_i4battach(struct device*, struct device *, void *);
#define CDEV_MAJOR 65
static struct cfdriver i4bcd =
{ NULL, "i4b", i4bmatch, dummy_i4battach, DV_DULL,
sizeof(struct cfdriver) };
struct devsw i4bsw =
{ &i4bcd,
i4bopen, i4bclose, i4bread, nowrite,
i4bioctl, i4bselect, nommap, nostrat,
nodump, nopsize, 0, nostop
};
int
i4bmatch(struct device *parent, struct cfdata *cf, void *aux)
{
printf("i4bmatch: aux=0x%x\n", aux);
return 1;
}
void
dummy_i4battach(struct device *parent, struct device *self, void *aux)
{
printf("dummy_i4battach: aux=0x%x\n", aux);
}
#endif /* __bsdi__ */
/*---------------------------------------------------------------------------*
* interface attach routine
*---------------------------------------------------------------------------*/
PDEVSTATIC void
#ifdef __FreeBSD__
isdnattach(void *dummy)
#else
isdnattach()
#endif
{
i4b_rdqueue.ifq_maxlen = IFQ_MAXLEN;
#if defined(__FreeBSD__)
#if __FreeBSD__ == 3
#ifdef DEVFS
devfs_token = devfs_add_devswf(&i4b_cdevsw, 0, DV_CHR,
UID_ROOT, GID_WHEEL, 0600,
"i4b");
#endif
#else
make_dev(&i4b_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "i4b");
#endif
#endif
}
/*---------------------------------------------------------------------------*
* i4bopen - device driver open routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdnopen(dev_t dev, int flag, int fmt, struct lwp *l)
{
int x;
if(minor(dev))
return(ENXIO);
if(openflag)
return(EBUSY);
x = splnet();
openflag = 1;
i4b_l4_daemon_attached();
splx(x);
return(0);
}
/*---------------------------------------------------------------------------*
* i4bclose - device driver close routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdnclose(dev_t dev, int flag, int fmt,
struct lwp *l)
{
int x = splnet();
openflag = 0;
i4b_l4_daemon_detached();
i4b_Dcleanifq(&i4b_rdqueue);
splx(x);
return(0);
}
/*---------------------------------------------------------------------------*
* i4bread - device driver read routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdnread(dev_t dev, struct uio *uio, int ioflag)
{
struct mbuf *m;
int x;
int error = 0;
if(minor(dev))
return(ENODEV);
x = splnet();
while(IF_QEMPTY(&i4b_rdqueue))
{
readflag = 1;
error = tsleep((void *) &i4b_rdqueue, (PZERO + 1) | PCATCH, "bird", 0);
if (error != 0) {
splx(x);
return error;
}
}
IF_DEQUEUE(&i4b_rdqueue, m);
splx(x);
if(m && m->m_len)
error = uiomove(m->m_data, m->m_len, uio);
else
error = EIO;
if(m)
i4b_Dfreembuf(m);
return(error);
}
/*---------------------------------------------------------------------------*
* i4bioctl - device driver ioctl routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdnioctl(dev_t dev, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct isdn_l3_driver *d;
call_desc_t *cd;
int error = 0;
if(minor(dev))
return(ENODEV);
switch(cmd)
{
/* cdid request, reserve cd and return cdid */
case I4B_CDID_REQ:
{
msg_cdid_req_t *mir;
mir = (msg_cdid_req_t *)data;
cd = reserve_cd();
mir->cdid = cd->cdid;
break;
}
/* connect request, dial out to remote */
case I4B_CONNECT_REQ:
{
msg_connect_req_t *mcr;
mcr = (msg_connect_req_t *)data; /* setup ptr */
if((cd = cd_by_cdid(mcr->cdid)) == NULL)/* get cd */
{
NDBGL4(L4_ERR, "I4B_CONNECT_REQ ioctl, cdid not found!");
error = EINVAL;
break;
}
cd->isdnif = -1;
cd->l3drv = NULL;
d = isdn_find_l3_by_isdnif(mcr->controller);
if (d == NULL) {
error = EINVAL;
break;
}
/* prevent dialling on leased lines */
if(d->protocol == PROTOCOL_D64S)
{
SET_CAUSE_TYPE(cd->cause_in, CAUSET_I4B);
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_LLDIAL);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
break;
}
cd->isdnif = mcr->controller; /* fill cd */
cd->l3drv = d;
cd->bprot = mcr->bprot;
cd->bchan_driver_index = mcr->driver;
cd->bchan_driver_unit = mcr->driver_unit;
cd->cr = get_rand_cr(cd->isdnif);
cd->shorthold_data.shorthold_algorithm = mcr->shorthold_data.shorthold_algorithm;
cd->shorthold_data.unitlen_time = mcr->shorthold_data.unitlen_time;
cd->shorthold_data.idle_time = mcr->shorthold_data.idle_time;
cd->shorthold_data.earlyhup_time = mcr->shorthold_data.earlyhup_time;
cd->last_aocd_time = 0;
if(mcr->unitlen_method == ULEN_METHOD_DYNAMIC)
cd->aocd_flag = 1;
else
cd->aocd_flag = 0;
cd->cunits = 0;
cd->max_idle_time = 0; /* this is outgoing */
cd->dir = DIR_OUTGOING;
NDBGL4(L4_TIMO, "I4B_CONNECT_REQ times, algorithm=%ld unitlen=%ld idle=%ld earlyhup=%ld",
(long)cd->shorthold_data.shorthold_algorithm, (long)cd->shorthold_data.unitlen_time,
(long)cd->shorthold_data.idle_time, (long)cd->shorthold_data.earlyhup_time);
strlcpy(cd->dst_telno, mcr->dst_telno,
sizeof(cd->dst_telno));
strlcpy(cd->src_telno, mcr->src_telno,
sizeof(cd->src_telno));
cd->display[0] = '\0';
SET_CAUSE_TYPE(cd->cause_in, CAUSET_I4B);
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NORMAL);
/*
* If we want a specific channel, check if that
* one is available.
*/
if ((mcr->channel >= 0) && (mcr->channel < d->nbch)) {
if(d->bch_state[mcr->channel] != BCH_ST_FREE)
SET_CAUSE_VAL(cd->cause_in,
CAUSE_I4B_NOCHAN);
/*
* If any channel will do, see if any are free.
*/
} else if (mcr->channel == CHAN_ANY) {
int i;
for (i = 0; i < d->nbch; i++)
if (d->bch_state[i] == BCH_ST_FREE)
break;
if (i == d->nbch)
SET_CAUSE_VAL(cd->cause_in,
CAUSE_I4B_NOCHAN);
} else {
SET_CAUSE_VAL(cd->cause_in, CAUSE_I4B_NOCHAN);
}
cd->channelid = mcr->channel;
cd->isdntxdelay = mcr->txdelay;
if((GET_CAUSE_VAL(cd->cause_in)) != CAUSE_I4B_NORMAL)
{
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
else
{
d->l3driver->N_CONNECT_REQUEST(cd);
}
break;
}
/* connect response, accept/reject/ignore incoming call */
case I4B_CONNECT_RESP:
{
msg_connect_resp_t *mcrsp;
mcrsp = (msg_connect_resp_t *)data;
if((cd = cd_by_cdid(mcrsp->cdid)) == NULL)/* get cd */
{
NDBGL4(L4_ERR, "I4B_CONNECT_RESP ioctl, cdid not found!");
error = EINVAL;
break;
}
T400_stop(cd);
cd->bchan_driver_index = mcrsp->driver;
cd->bchan_driver_unit = mcrsp->driver_unit;
cd->max_idle_time = mcrsp->max_idle_time;
cd->shorthold_data.shorthold_algorithm = SHA_FIXU;
cd->shorthold_data.unitlen_time = 0; /* this is incoming */
cd->shorthold_data.idle_time = 0;
cd->shorthold_data.earlyhup_time = 0;
cd->isdntxdelay = mcrsp->txdelay;
NDBGL4(L4_TIMO, "I4B_CONNECT_RESP max_idle_time set to %ld seconds", (long)cd->max_idle_time);
d = isdn_find_l3_by_isdnif(cd->isdnif);
if (d == NULL) {
error = EINVAL;
break;
}
d->l3driver->N_CONNECT_RESPONSE(cd, mcrsp->response, mcrsp->cause);
break;
}
/* disconnect request, actively terminate connection */
case I4B_DISCONNECT_REQ:
{
msg_discon_req_t *mdr;
mdr = (msg_discon_req_t *)data;
if((cd = cd_by_cdid(mdr->cdid)) == NULL)/* get cd */
{
NDBGL4(L4_ERR, "I4B_DISCONNECT_REQ ioctl, cdid %d not found!", mdr->cdid);
error = EINVAL;
break;
}
/* preset causes with our cause */
cd->cause_in = cd->cause_out = mdr->cause;
d = isdn_find_l3_by_isdnif(cd->isdnif);
if (d == NULL) {
error = EINVAL;
break;
}
d->l3driver->N_DISCONNECT_REQUEST(cd, mdr->cause);
break;
}
/* controller info request */
case I4B_CTRL_INFO_REQ:
{
msg_ctrl_info_req_t *mcir;
int isdnif;
mcir = (msg_ctrl_info_req_t *)data;
isdnif = mcir->controller;
memset(mcir, 0, sizeof(msg_ctrl_info_req_t));
mcir->controller = isdnif;
mcir->ncontroller
= isdn_count_isdnif(&mcir->max_isdnif);
d = isdn_find_l3_by_isdnif(isdnif);
if (d != NULL) {
mcir->tei = d->tei;
mcir->nbch = d->nbch;
strncpy(mcir->devname, d->devname, sizeof(mcir->devname)-1);
strncpy(mcir->cardname, d->card_name, sizeof(mcir->cardname)-1);
} else {
error = ENODEV;
}
break;
}
/* dial response */
case I4B_DIALOUT_RESP:
{
const struct isdn_l4_driver_functions *drv;
msg_dialout_resp_t *mdrsp;
void *l4_softc;
mdrsp = (msg_dialout_resp_t *)data;
drv = isdn_l4_get_driver(mdrsp->driver, mdrsp->driver_unit);
if(drv != NULL) {
l4_softc = (*drv->get_softc)(mdrsp->driver_unit);
(*drv->dial_response)(l4_softc, mdrsp->stat, mdrsp->cause);
}
break;
}
/* update timeout value */
case I4B_TIMEOUT_UPD:
{
msg_timeout_upd_t *mtu;
int x;
mtu = (msg_timeout_upd_t *)data;
NDBGL4(L4_TIMO, "I4B_TIMEOUT_UPD ioctl, alg %d, unit %d, idle %d, early %d!",
mtu->shorthold_data.shorthold_algorithm, mtu->shorthold_data.unitlen_time,
mtu->shorthold_data.idle_time, mtu->shorthold_data.earlyhup_time);
if((cd = cd_by_cdid(mtu->cdid)) == NULL)/* get cd */
{
NDBGL4(L4_ERR, "I4B_TIMEOUT_UPD ioctl, cdid not found!");
error = EINVAL;
break;
}
switch( mtu->shorthold_data.shorthold_algorithm )
{
case SHA_FIXU:
/*
* For this algorithm unitlen_time,
* idle_time and earlyhup_time are used.
*/
if(!(mtu->shorthold_data.unitlen_time >= 0 &&
mtu->shorthold_data.idle_time >= 0 &&
mtu->shorthold_data.earlyhup_time >= 0))
{
NDBGL4(L4_ERR, "I4B_TIMEOUT_UPD ioctl, invalid args for fix unit algorithm!");
error = EINVAL;
}
break;
case SHA_VARU:
/*
* For this algorithm unitlen_time and
* idle_time are used. both must be
* positive integers. earlyhup_time is
* not used and must be 0.
*/
if(!(mtu->shorthold_data.unitlen_time > 0 &&
mtu->shorthold_data.idle_time >= 0 &&
mtu->shorthold_data.earlyhup_time == 0))
{
NDBGL4(L4_ERR, "I4B_TIMEOUT_UPD ioctl, invalid args for var unit algorithm!");
error = EINVAL;
}
break;
default:
NDBGL4(L4_ERR, "I4B_TIMEOUT_UPD ioctl, invalid algorithm!");
error = EINVAL;
break;
}
/*
* any error set above requires us to break
* out of the outer switch
*/
if(error != 0)
break;
x = splnet();
cd->shorthold_data.shorthold_algorithm = mtu->shorthold_data.shorthold_algorithm;
cd->shorthold_data.unitlen_time = mtu->shorthold_data.unitlen_time;
cd->shorthold_data.idle_time = mtu->shorthold_data.idle_time;
cd->shorthold_data.earlyhup_time = mtu->shorthold_data.earlyhup_time;
splx(x);
break;
}
/* soft enable/disable interface */
case I4B_UPDOWN_IND:
{
msg_updown_ind_t *mui;
const struct isdn_l4_driver_functions *drv;
void *l4_softc;
mui = (msg_updown_ind_t *)data;
drv = isdn_l4_get_driver(mui->driver, mui->driver_unit);
if (drv)
{
l4_softc = drv->get_softc(mui->driver_unit);
(*drv->updown_ind)(l4_softc, mui->updown);
}
break;
}
/* send ALERT request */
case I4B_ALERT_REQ:
{
msg_alert_req_t *mar;
mar = (msg_alert_req_t *)data;
if((cd = cd_by_cdid(mar->cdid)) == NULL)
{
NDBGL4(L4_ERR, "I4B_ALERT_REQ ioctl, cdid not found!");
error = EINVAL;
break;
}
T400_stop(cd);
d = cd->l3drv;
if (d == NULL) {
error = EINVAL;
break;
}
d->l3driver->N_ALERT_REQUEST(cd);
break;
}
/* version/release number request */
case I4B_VR_REQ:
{
msg_vr_req_t *mvr;
mvr = (msg_vr_req_t *)data;
mvr->version = VERSION;
mvr->release = REL;
mvr->step = STEP;
break;
}
/* set D-channel protocol for a controller */
case I4B_PROT_IND:
{
msg_prot_ind_t *mpi;
mpi = (msg_prot_ind_t *)data;
d = isdn_find_l3_by_isdnif(mpi->controller);
if (d == NULL) {
error = EINVAL;
break;
}
d->protocol = mpi->protocol;
break;
}
case I4B_L4DRIVER_LOOKUP:
{
msg_l4driver_lookup_t *lookup = (msg_l4driver_lookup_t*)data;
lookup->name[L4DRIVER_NAME_SIZ-1] = 0;
lookup->driver_id = isdn_l4_find_driverid(lookup->name);
if (lookup->driver_id < 0)
error = ENXIO;
break;
}
/* Download request */
case I4B_CTRL_DOWNLOAD:
{
struct isdn_dr_prot *prots = NULL, *prots2 = NULL;
struct isdn_download_request *r =
(struct isdn_download_request*)data;
int i;
d = isdn_find_l3_by_isdnif(r->controller);
if (d == NULL)
{
error = ENODEV;
goto download_done;
}
if(d->l3driver->N_DOWNLOAD == NULL)
{
error = ENODEV;
goto download_done;
}
prots = malloc(r->numprotos * sizeof(struct isdn_dr_prot),
M_DEVBUF, M_WAITOK);
prots2 = malloc(r->numprotos * sizeof(struct isdn_dr_prot),
M_DEVBUF, M_WAITOK);
if(!prots || !prots2)
{
error = ENOMEM;
goto download_done;
}
copyin(r->protocols, prots, r->numprotos * sizeof(struct isdn_dr_prot));
for(i = 0; i < r->numprotos; i++)
{
prots2[i].microcode = malloc(prots[i].bytecount, M_DEVBUF, M_WAITOK);
copyin(prots[i].microcode, prots2[i].microcode, prots[i].bytecount);
prots2[i].bytecount = prots[i].bytecount;
}
error = d->l3driver->N_DOWNLOAD(
d->l1_token,
r->numprotos, prots2);
download_done:
if(prots2)
{
for(i = 0; i < r->numprotos; i++)
{
if(prots2[i].microcode)
{
free(prots2[i].microcode, M_DEVBUF);
}
}
free(prots2, M_DEVBUF);
}
if(prots)
{
free(prots, M_DEVBUF);
}
break;
}
/* Diagnostic request */
case I4B_ACTIVE_DIAGNOSTIC:
{
struct isdn_diagnostic_request req, *r =
(struct isdn_diagnostic_request*)data;
req.in_param = req.out_param = NULL;
d = isdn_find_l3_by_isdnif(r->controller);
if (d == NULL)
{
error = ENODEV;
goto diag_done;
}
if (d->l3driver->N_DIAGNOSTICS == NULL)
{
error = ENODEV;
goto diag_done;
}
memcpy(&req, r, sizeof(req));
if(req.in_param_len)
{
/* XXX arbitrary limit */
if (req.in_param_len > I4B_ACTIVE_DIAGNOSTIC_MAXPARAMLEN) {
error = EINVAL;
goto diag_done;
}
req.in_param = malloc(r->in_param_len, M_DEVBUF, M_WAITOK);
if(!req.in_param)
{
error = ENOMEM;
goto diag_done;
}
error = copyin(r->in_param, req.in_param, req.in_param_len);
if (error)
goto diag_done;
}
if(req.out_param_len)
{
req.out_param = malloc(r->out_param_len, M_DEVBUF, M_WAITOK);
if(!req.out_param)
{
error = ENOMEM;
goto diag_done;
}
}
error = d->l3driver->N_DIAGNOSTICS(d->l1_token, &req);
if(!error && req.out_param_len)
error = copyout(req.out_param, r->out_param, req.out_param_len);
diag_done:
if(req.in_param)
free(req.in_param, M_DEVBUF);
if(req.out_param)
free(req.out_param, M_DEVBUF);
break;
}
/* default */
default:
error = ENOTTY;
break;
}
return(error);
}
#ifdef OS_USES_SELECT
/*---------------------------------------------------------------------------*
* i4bselect - device driver select routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
i4bselect(dev_t dev, int rw, struct lwp *l)
{
int x;
if(minor(dev))
return(ENODEV);
switch(rw)
{
case FREAD:
if(!IF_QEMPTY(&i4b_rdqueue))
return(1);
x = splnet();
selrecord(l, &select_rd_info);
selflag = 1;
splx(x);
return(0);
break;
case FWRITE:
return(1);
break;
}
return(0);
}
#else /* OS_USES_SELECT */
/*---------------------------------------------------------------------------*
* i4bpoll - device driver poll routine
*---------------------------------------------------------------------------*/
PDEVSTATIC int
isdnpoll(dev_t dev, int events, struct lwp *l)
{
int x;
if(minor(dev))
return(ENODEV);
if((events & POLLIN) || (events & POLLRDNORM))
{
if(!IF_QEMPTY(&i4b_rdqueue))
return(1);
x = splnet();
selrecord(l, &select_rd_info);
selflag = 1;
splx(x);
return(0);
}
else if((events & POLLOUT) || (events & POLLWRNORM))
{
return(1);
}
return(0);
}
static void
filt_i4brdetach(struct knote *kn)
{
int s;
s = splnet();
SLIST_REMOVE(&select_rd_info.sel_klist, kn, knote, kn_selnext);
splx(s);
}
static int
filt_i4bread(struct knote *kn, long hint)
{
struct mbuf *m;
if (IF_QEMPTY(&i4b_rdqueue))
return (0);
IF_POLL(&i4b_rdqueue, m);
kn->kn_data = m->m_len;
return (1);
}
static const struct filterops i4bread_filtops =
{ 1, NULL, filt_i4brdetach, filt_i4bread };
static const struct filterops i4b_seltrue_filtops =
{ 1, NULL, filt_i4brdetach, filt_seltrue };
int
isdnkqfilter(dev_t dev, struct knote *kn)
{
struct klist *klist;
int s;
switch (kn->kn_filter) {
case EVFILT_READ:
klist = &select_rd_info.sel_klist;
kn->kn_fop = &i4bread_filtops;
break;
case EVFILT_WRITE:
klist = &select_rd_info.sel_klist;
kn->kn_fop = &i4b_seltrue_filtops;
break;
default:
return (1);
}
kn->kn_hook = NULL;
s = splnet();
SLIST_INSERT_HEAD(klist, kn, kn_selnext);
splx(s);
return (0);
}
#endif /* OS_USES_SELECT */
/*---------------------------------------------------------------------------*
* i4bputqueue - put message into queue to userland
*---------------------------------------------------------------------------*/
void
i4bputqueue(struct mbuf *m)
{
int x;
if(!openflag)
{
i4b_Dfreembuf(m);
return;
}
x = splnet();
if(IF_QFULL(&i4b_rdqueue))
{
struct mbuf *m1;
IF_DEQUEUE(&i4b_rdqueue, m1);
i4b_Dfreembuf(m1);
NDBGL4(L4_ERR, "ERROR, queue full, removing entry!");
}
IF_ENQUEUE(&i4b_rdqueue, m);
splx(x);
if(readflag)
{
readflag = 0;
wakeup((void *) &i4b_rdqueue);
}
if(selflag)
{
selflag = 0;
selnotify(&select_rd_info, 0);
}
}
/*---------------------------------------------------------------------------*
* i4bputqueue_hipri - put message into front of queue to userland
*---------------------------------------------------------------------------*/
void
i4bputqueue_hipri(struct mbuf *m)
{
int x;
if(!openflag)
{
i4b_Dfreembuf(m);
return;
}
x = splnet();
if(IF_QFULL(&i4b_rdqueue))
{
struct mbuf *m1;
IF_DEQUEUE(&i4b_rdqueue, m1);
i4b_Dfreembuf(m1);
NDBGL4(L4_ERR, "ERROR, queue full, removing entry!");
}
IF_PREPEND(&i4b_rdqueue, m);
splx(x);
if(readflag)
{
readflag = 0;
wakeup((void *) &i4b_rdqueue);
}
if(selflag)
{
selflag = 0;
selnotify(&select_rd_info, 0);
}
}
void
isdn_isdnif_ready(int isdnif)
{
struct isdn_l3_driver *d = isdn_find_l3_by_isdnif(isdnif);
if (d == NULL)
return;
printf("ISDN %d at %s, %d B channels\n", isdnif, d->devname, d->nbch);
if (!openflag) return;
d->l3driver->N_MGMT_COMMAND(d, CMR_DOPEN, 0);
i4b_l4_contr_ev_ind(isdnif, 1);
}
#endif /* NISDN > 0 */
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