dvb_net.c

linux-2.6.15.6

					       mac_allmulti, mask_allmulti);
			break;
		case RX_MODE_PROMISC:
			priv->multi_num=0;
			dprintk("%s: set secfilter\n", __FUNCTION__);
			dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc);
			break;
		}

		dprintk("%s: start filtering\n", __FUNCTION__);
		priv->secfeed->start_filtering(priv->secfeed);
	} else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
		struct timespec timeout = { 0, 30000000 }; // 30 msec

		/* we have payloads encapsulated in TS */
		dprintk("%s: alloc tsfeed\n", __FUNCTION__);
		ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback);
		if (ret < 0) {
			printk("%s: could not allocate ts feed\n", dev->name);
			goto error;
		}

		/* Set netdevice pointer for ts decaps callback. */
		priv->tsfeed->priv = (void *)dev;
		ret = priv->tsfeed->set(priv->tsfeed, priv->pid,
					TS_PACKET, DMX_TS_PES_OTHER,
					32768,     /* circular buffer size */
					timeout);

		if (ret < 0) {
			printk("%s: could not set ts feed\n", dev->name);
			priv->demux->release_ts_feed(priv->demux, priv->tsfeed);
			priv->tsfeed = NULL;
			goto error;
		}

		dprintk("%s: start filtering\n", __FUNCTION__);
		priv->tsfeed->start_filtering(priv->tsfeed);
	} else
		ret = -EINVAL;

error:
	up(&priv->mutex);
	return ret;
}

static int dvb_net_feed_stop(struct net_device *dev)
{
	struct dvb_net_priv *priv = dev->priv;
	int i, ret = 0;

	dprintk("%s\n", __FUNCTION__);
	down(&priv->mutex);
	if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) {
		if (priv->secfeed) {
			if (priv->secfeed->is_filtering) {
				dprintk("%s: stop secfeed\n", __FUNCTION__);
				priv->secfeed->stop_filtering(priv->secfeed);
			}

			if (priv->secfilter) {
				dprintk("%s: release secfilter\n", __FUNCTION__);
				priv->secfeed->release_filter(priv->secfeed,
							      priv->secfilter);
				priv->secfilter=NULL;
			}

			for (i=0; i<priv->multi_num; i++) {
				if (priv->multi_secfilter[i]) {
					dprintk("%s: release multi_filter[%d]\n",
						__FUNCTION__, i);
					priv->secfeed->release_filter(priv->secfeed,
								      priv->multi_secfilter[i]);
					priv->multi_secfilter[i] = NULL;
				}
			}

			priv->demux->release_section_feed(priv->demux, priv->secfeed);
			priv->secfeed = NULL;
		} else
			printk("%s: no feed to stop\n", dev->name);
	} else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
		if (priv->tsfeed) {
			if (priv->tsfeed->is_filtering) {
				dprintk("%s: stop tsfeed\n", __FUNCTION__);
				priv->tsfeed->stop_filtering(priv->tsfeed);
			}
			priv->demux->release_ts_feed(priv->demux, priv->tsfeed);
			priv->tsfeed = NULL;
		}
		else
			printk("%s: no ts feed to stop\n", dev->name);
	} else
		ret = -EINVAL;
	up(&priv->mutex);
	return ret;
}


static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc)
{
	struct dvb_net_priv *priv = dev->priv;

	if (priv->multi_num == DVB_NET_MULTICAST_MAX)
		return -ENOMEM;

	memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6);

	priv->multi_num++;
	return 0;
}


static void wq_set_multicast_list (void *data)
{
	struct net_device *dev = data;
	struct dvb_net_priv *priv = dev->priv;

	dvb_net_feed_stop(dev);
	priv->rx_mode = RX_MODE_UNI;
	spin_lock_bh(&dev->xmit_lock);

	if (dev->flags & IFF_PROMISC) {
		dprintk("%s: promiscuous mode\n", dev->name);
		priv->rx_mode = RX_MODE_PROMISC;
	} else if ((dev->flags & IFF_ALLMULTI)) {
		dprintk("%s: allmulti mode\n", dev->name);
		priv->rx_mode = RX_MODE_ALL_MULTI;
	} else if (dev->mc_count) {
		int mci;
		struct dev_mc_list *mc;

		dprintk("%s: set_mc_list, %d entries\n",
			dev->name, dev->mc_count);

		priv->rx_mode = RX_MODE_MULTI;
		priv->multi_num = 0;

		for (mci = 0, mc=dev->mc_list;
		     mci < dev->mc_count;
		     mc = mc->next, mci++) {
			dvb_set_mc_filter(dev, mc);
		}
	}

	spin_unlock_bh(&dev->xmit_lock);
	dvb_net_feed_start(dev);
}


static void dvb_net_set_multicast_list (struct net_device *dev)
{
	struct dvb_net_priv *priv = dev->priv;
	schedule_work(&priv->set_multicast_list_wq);
}


static void wq_restart_net_feed (void *data)
{
	struct net_device *dev = data;

	if (netif_running(dev)) {
		dvb_net_feed_stop(dev);
		dvb_net_feed_start(dev);
	}
}


static int dvb_net_set_mac (struct net_device *dev, void *p)
{
	struct dvb_net_priv *priv = dev->priv;
	struct sockaddr *addr=p;

	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);

	if (netif_running(dev))
		schedule_work(&priv->restart_net_feed_wq);

	return 0;
}


static int dvb_net_open(struct net_device *dev)
{
	struct dvb_net_priv *priv = dev->priv;

	priv->in_use++;
	dvb_net_feed_start(dev);
	return 0;
}


static int dvb_net_stop(struct net_device *dev)
{
	struct dvb_net_priv *priv = dev->priv;

	priv->in_use--;
	return dvb_net_feed_stop(dev);
}

static struct net_device_stats * dvb_net_get_stats(struct net_device *dev)
{
	return &((struct dvb_net_priv*) dev->priv)->stats;
}

static void dvb_net_setup(struct net_device *dev)
{
	ether_setup(dev);

	dev->open		= dvb_net_open;
	dev->stop		= dvb_net_stop;
	dev->hard_start_xmit	= dvb_net_tx;
	dev->get_stats		= dvb_net_get_stats;
	dev->set_multicast_list = dvb_net_set_multicast_list;
	dev->set_mac_address    = dvb_net_set_mac;
	dev->mtu		= 4096;
	dev->mc_count           = 0;
	dev->hard_header_cache  = NULL;
	dev->flags |= IFF_NOARP;
}

static int get_if(struct dvb_net *dvbnet)
{
	int i;

	for (i=0; i<DVB_NET_DEVICES_MAX; i++)
		if (!dvbnet->state[i])
			break;

	if (i == DVB_NET_DEVICES_MAX)
		return -1;

	dvbnet->state[i]=1;
	return i;
}

static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype)
{
	struct net_device *net;
	struct dvb_net_priv *priv;
	int result;
	int if_num;

	if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE)
		return -EINVAL;
	if ((if_num = get_if(dvbnet)) < 0)
		return -EINVAL;

	net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup);
	if (!net)
		return -ENOMEM;

	if (dvbnet->dvbdev->id)
		snprintf(net->name, IFNAMSIZ, "dvb%d%u%d",
			 dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num);
	else
		/* compatibility fix to keep dvb0_0 format */
		snprintf(net->name, IFNAMSIZ, "dvb%d_%d",
			 dvbnet->dvbdev->adapter->num, if_num);

	net->addr_len = 6;
	memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6);

	dvbnet->device[if_num] = net;

	priv = net->priv;
	priv->demux = dvbnet->demux;
	priv->pid = pid;
	priv->rx_mode = RX_MODE_UNI;
	priv->need_pusi = 1;
	priv->tscc = 0;
	priv->feedtype = feedtype;
	reset_ule(priv);

	INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list, net);
	INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed, net);
	init_MUTEX(&priv->mutex);

	net->base_addr = pid;

	if ((result = register_netdev(net)) < 0) {
		dvbnet->device[if_num] = NULL;
		free_netdev(net);
		return result;
	}
	printk("dvb_net: created network interface %s\n", net->name);

	return if_num;
}

static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned int num)
{
	struct net_device *net = dvbnet->device[num];
	struct dvb_net_priv *priv;

	if (!dvbnet->state[num])
		return -EINVAL;
	priv = net->priv;
	if (priv->in_use)
		return -EBUSY;

	dvb_net_stop(net);
	flush_scheduled_work();
	printk("dvb_net: removed network interface %s\n", net->name);
	unregister_netdev(net);
	dvbnet->state[num]=0;
	dvbnet->device[num] = NULL;
	free_netdev(net);

	return 0;
}

static int dvb_net_do_ioctl(struct inode *inode, struct file *file,
		  unsigned int cmd, void *parg)
{
	struct dvb_device *dvbdev = file->private_data;
	struct dvb_net *dvbnet = dvbdev->priv;

	if (((file->f_flags&O_ACCMODE)==O_RDONLY))
		return -EPERM;

	switch (cmd) {
	case NET_ADD_IF:
	{
		struct dvb_net_if *dvbnetif = parg;
		int result;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (!try_module_get(dvbdev->adapter->module))
			return -EPERM;

		result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype);
		if (result<0) {
			module_put(dvbdev->adapter->module);
			return result;
		}
		dvbnetif->if_num=result;
		break;
	}
	case NET_GET_IF:
	{
		struct net_device *netdev;
		struct dvb_net_priv *priv_data;
		struct dvb_net_if *dvbnetif = parg;

		if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
		    !dvbnet->state[dvbnetif->if_num])
			return -EINVAL;

		netdev = dvbnet->device[dvbnetif->if_num];

		priv_data = netdev->priv;
		dvbnetif->pid=priv_data->pid;
		dvbnetif->feedtype=priv_data->feedtype;
		break;
	}
	case NET_REMOVE_IF:
	{
		int ret;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
		if ((unsigned int) parg >= DVB_NET_DEVICES_MAX)
			return -EINVAL;
		ret = dvb_net_remove_if(dvbnet, (unsigned int) parg);
		if (!ret)
			module_put(dvbdev->adapter->module);
		return ret;
	}

	/* binary compatiblity cruft */
	case __NET_ADD_IF_OLD:
	{
		struct __dvb_net_if_old *dvbnetif = parg;
		int result;

		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;

		if (!try_module_get(dvbdev->adapter->module))
			return -EPERM;

		result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE);
		if (result<0) {
			module_put(dvbdev->adapter->module);
			return result;
		}
		dvbnetif->if_num=result;
		break;
	}
	case __NET_GET_IF_OLD:
	{
		struct net_device *netdev;
		struct dvb_net_priv *priv_data;
		struct __dvb_net_if_old *dvbnetif = parg;

		if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
		    !dvbnet->state[dvbnetif->if_num])
			return -EINVAL;

		netdev = dvbnet->device[dvbnetif->if_num];

		priv_data = netdev->priv;
		dvbnetif->pid=priv_data->pid;
		break;
	}
	default:
		return -ENOTTY;
	}
	return 0;
}

static int dvb_net_ioctl(struct inode *inode, struct file *file,
	      unsigned int cmd, unsigned long arg)
{
	return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl);
}

static struct file_operations dvb_net_fops = {
	.owner = THIS_MODULE,
	.ioctl = dvb_net_ioctl,
	.open =	dvb_generic_open,
	.release = dvb_generic_release,
};

static struct dvb_device dvbdev_net = {
	.priv = NULL,
	.users = 1,
	.writers = 1,
	.fops = &dvb_net_fops,
};


void dvb_net_release (struct dvb_net *dvbnet)
{
	int i;

	dvb_unregister_device(dvbnet->dvbdev);

	for (i=0; i<DVB_NET_DEVICES_MAX; i++) {
		if (!dvbnet->state[i])
			continue;
		dvb_net_remove_if(dvbnet, i);
	}
}
EXPORT_SYMBOL(dvb_net_release);


int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet,
		  struct dmx_demux *dmx)
{
	int i;

	dvbnet->demux = dmx;

	for (i=0; i<DVB_NET_DEVICES_MAX; i++)
		dvbnet->state[i] = 0;

	dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net,
			     dvbnet, DVB_DEVICE_NET);

	return 0;
}
EXPORT_SYMBOL(dvb_net_init);