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