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/**
* Samsung Virtual Network driver using OneDram device
*
* Copyright (C) 2010 Samsung Electronics. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
/* #define DEBUG */
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/if.h>
#include <linux/if_arp.h>
#include "pdp.h"
static int vnet_open(struct net_device *ndev)
{
netif_start_queue(ndev);
return 0;
}
static int vnet_stop(struct net_device *ndev)
{
netif_stop_queue(ndev);
return 0;
}
static struct net_device_ops vnet_ops = {
.ndo_open = vnet_open,
.ndo_stop = vnet_stop,
/* .ndo_tx_timeout = vnet_tx_timeout,
.ndo_start_xmit = vnet_start_xmit,*/
};
static void vnet_setup(struct net_device *ndev)
{
vnet_ops.ndo_start_xmit = vnet_start_xmit;
ndev->netdev_ops = &vnet_ops;
ndev->type = ARPHRD_PPP;
ndev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
ndev->hard_header_len = 0;
ndev->addr_len = 0;
ndev->tx_queue_len = 1000;
ndev->mtu = ETH_DATA_LEN;
ndev->watchdog_timeo = 5 * HZ;
}
struct net_device *create_pdp(int channel, struct net_device *parent)
{
int r;
struct pdp_priv *priv;
struct net_device *ndev;
char devname[IFNAMSIZ];
if (!parent)
return ERR_PTR(-EINVAL);
sprintf(devname, "pdp%d", channel - 1);
ndev = alloc_netdev(sizeof(struct pdp_priv), devname, vnet_setup);
if (!ndev)
return ERR_PTR(-ENOMEM);
priv = netdev_priv(ndev);
priv->channel = channel;
priv->parent = parent;
r = register_netdev(ndev);
if (r) {
free_netdev(ndev);
return ERR_PTR(r);
}
return ndev;
}
void destroy_pdp(struct net_device **ndev)
{
if (!ndev || !*ndev)
return;
unregister_netdev(*ndev);
free_netdev(*ndev);
*ndev = NULL;
}
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