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/*
* libdvbnet - a DVB network support library
*
* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/param.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/dvb/net.h>
#include <errno.h>
#include "dvbnet.h"
int dvbnet_open(int adapter, int netdeviceid)
{
char filename[PATH_MAX+1];
int fd;
sprintf(filename, "/dev/dvb/adapter%i/net%i", adapter, netdeviceid);
if ((fd = open(filename, O_RDWR)) < 0) {
// if that failed, try a flat /dev structure
sprintf(filename, "/dev/dvb%i.net%i", adapter, netdeviceid);
fd = open(filename, O_RDWR);
}
return fd;
}
int dvbnet_add_interface(int fd, uint16_t pid, enum dvbnet_encap encapsulation)
{
struct dvb_net_if params;
int status;
memset(¶ms, 0, sizeof(params));
params.pid = pid;
switch(encapsulation) {
case DVBNET_ENCAP_MPE:
params.feedtype = DVB_NET_FEEDTYPE_MPE;
break;
case DVBNET_ENCAP_ULE:
params.feedtype = DVB_NET_FEEDTYPE_ULE;
break;
default:
return -EINVAL;
}
status = ioctl(fd, NET_ADD_IF, ¶ms);
if (status < 0)
return status;
return params.if_num;
}
int dvbnet_get_interface(int fd, int ifnum, uint16_t *pid, enum dvbnet_encap *encapsulation)
{
struct dvb_net_if info;
int res;
memset(&info, 0, sizeof(struct dvb_net_if));
info.if_num = ifnum;
if ((res = ioctl(fd, NET_GET_IF, &info)) < 0)
return res;
*pid = info.pid;
switch(info.feedtype) {
case DVB_NET_FEEDTYPE_MPE:
*encapsulation = DVBNET_ENCAP_MPE;
break;
case DVB_NET_FEEDTYPE_ULE:
*encapsulation = DVBNET_ENCAP_ULE;
break;
default:
return -EINVAL;
}
return 0;
}
int dvbnet_remove_interface(int fd, int ifnum)
{
return ioctl(fd, NET_REMOVE_IF, ifnum);
}
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