include/media/dvb_net.h

   1 /*
   2  * dvb_net.h
   3  *
   4  * Copyright (C) 2001 Ralph Metzler for convergence integrated media GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public License
   8  * as published by the Free Software Foundation; either version 2.1
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #ifndef _DVB_NET_H_
  19 #define _DVB_NET_H_
  20
  21 #include <linux/module.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/etherdevice.h>
  25 #include <linux/skbuff.h>
  26
  27 #include <media/dvbdev.h>
  28
  29 #define DVB_NET_DEVICES_MAX 10
  30
  31 #ifdef CONFIG_DVB_NET
  32
  33 /**
  34  * struct dvb_net - describes a DVB network interface
  35  *
  36  * @dvbdev:             pointer to &struct dvb_device.
  37  * @device:             array of pointers to &struct net_device.
  38  * @state:              array of integers to each net device. A value
  39  *                      different than zero means that the interface is
  40  *                      in usage.
  41  * @exit:               flag to indicate when the device is being removed.
  42  * @demux:              pointer to &struct dmx_demux.
  43  * @ioctl_mutex:        protect access to this struct.
  44  *
  45  * Currently, the core supports up to %DVB_NET_DEVICES_MAX (10) network
  46  * devices.
  47  */
  48
  49 struct dvb_net {
  50         struct dvb_device *dvbdev;
  51         struct net_device *device[DVB_NET_DEVICES_MAX];
  52         int state[DVB_NET_DEVICES_MAX];
  53         unsigned int exit:1;
  54         struct dmx_demux *demux;
  55         struct mutex ioctl_mutex;
  56 };
  57
  58 /**
  59  * dvb_net_init - nitializes a digital TV network device and registers it.
  60  *
  61  * @adap:       pointer to &struct dvb_adapter.
  62  * @dvbnet:     pointer to &struct dvb_net.
  63  * @dmxdemux:   pointer to &struct dmx_demux.
  64  */
  65 int dvb_net_init(struct dvb_adapter *adap, struct dvb_net *dvbnet,
  66                   struct dmx_demux *dmxdemux);
  67
  68 /**
  69  * dvb_net_release - releases a digital TV network device and unregisters it.
  70  *
  71  * @dvbnet:     pointer to &struct dvb_net.
  72  */
  73 void dvb_net_release(struct dvb_net *dvbnet);
  74
  75 #else
  76
  77 struct dvb_net {
  78         struct dvb_device *dvbdev;
  79 };
  80
  81 static inline void dvb_net_release(struct dvb_net *dvbnet)
  82 {
  83 }
  84
  85 static inline int dvb_net_init(struct dvb_adapter *adap,
  86                                struct dvb_net *dvbnet, struct dmx_demux *dmx)
  87 {
  88         return 0;
  89 }
  90
  91 #endif /* ifdef CONFIG_DVB_NET */
  92
  93 #endif