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 23 #include <media/dvbdev.h> 24 25 struct net_device; 26 27 #define DVB_NET_DEVICES_MAX 10 28 29 #ifdef CONFIG_DVB_NET 30 31 /** 32 * struct dvb_net - describes a DVB network interface 33 * 34 * @dvbdev: pointer to &struct dvb_device. 35 * @device: array of pointers to &struct net_device. 36 * @state: array of integers to each net device. A value 37 * different than zero means that the interface is 38 * in usage. 39 * @exit: flag to indicate when the device is being removed. 40 * @demux: pointer to &struct dmx_demux. 41 * @ioctl_mutex: protect access to this struct. 42 * 43 * Currently, the core supports up to %DVB_NET_DEVICES_MAX (10) network 44 * devices. 45 */ 46 47 struct dvb_net { 48 struct dvb_device *dvbdev; 49 struct net_device *device[DVB_NET_DEVICES_MAX]; 50 int state[DVB_NET_DEVICES_MAX]; 51 unsigned int exit:1; 52 struct dmx_demux *demux; 53 struct mutex ioctl_mutex; 54 }; 55 56 /** 57 * dvb_net_init - nitializes a digital TV network device and registers it. 58 * 59 * @adap: pointer to &struct dvb_adapter. 60 * @dvbnet: pointer to &struct dvb_net. 61 * @dmxdemux: pointer to &struct dmx_demux. 62 */ 63 int dvb_net_init(struct dvb_adapter *adap, struct dvb_net *dvbnet, 64 struct dmx_demux *dmxdemux); 65 66 /** 67 * dvb_net_release - releases a digital TV network device and unregisters it. 68 * 69 * @dvbnet: pointer to &struct dvb_net. 70 */ 71 void dvb_net_release(struct dvb_net *dvbnet); 72 73 #else 74 75 struct dvb_net { 76 struct dvb_device *dvbdev; 77 }; 78 79 static inline void dvb_net_release(struct dvb_net *dvbnet) 80 { 81 } 82 83 static inline int dvb_net_init(struct dvb_adapter *adap, 84 struct dvb_net *dvbnet, struct dmx_demux *dmx) 85 { 86 return 0; 87 } 88 89 #endif /* ifdef CONFIG_DVB_NET */ 90 91 #endif 92