Hi all, i'm trying to register a new net_device in linux...i can alloc and register it correctly and ifconfig shows it. The problem arrives when i try to put the interface up:
ifconfig my_dev up
A kernel freeze occurs...the problem is present only on x86 machines and i can't figure out the reason...on a pcc machine all works well. The code is very simple:
Code:
static struct net_device *my_dev;
static int veth_dev_init(struct net_device *dev);
static int veth_open(struct net_device *dev);
static int veth_close(struct net_device *dev);
static int veth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
static struct veth_priv
{
...
};
static struct net_device_ops veth_ops =
{
.ndo_init = veth_dev_init,
.ndo_open = veth_open,
.ndo_stop = veth_close,
.ndo_do_ioctl = veth_ioctl
};
static int __init veth_init()
{
my_dev = alloc_netdev(sizeof(struct veth_priv), "my_dev", ether_setup);
if (my_dev == NULL)
return -ENOMEM;
my_dev->netdev_ops = &veth_ops;
register_netdev(my_dev);
return 0;
}
static void __exit veth_exit()
{
unregister_netdev(my_dev);
free_netdev(my_dev);
}
module_init(veth_init);
module_exit(veth_exit);
The first four functions veth_dev_init, veth_open, veth_close and veth_ioctl simply return 0. Maybe is there a missing field in veth_ops structure?
Thank you all
