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#include "linux/kernel.h"
#include "linux/stddef.h"
#include "linux/init.h"
#include "linux/netdevice.h"
#include "linux/if_arp.h"
#include "net_kern.h"
#include "net_user.h"
#include "kern.h"
#include "slip.h"
struct slip_init {
char *gate_addr;
};
void slip_init(struct net_device *dev, void *data)
{
struct uml_net_private *private;
struct slip_data *spri;
struct slip_init *init = data;
private = dev->priv;
spri = (struct slip_data *) private->user;
*spri = ((struct slip_data)
{ name : { '\0' },
addr: NULL,
gate_addr : init->gate_addr,
slave : 0,
buf : { '\0' },
pos : 0,
esc : 0,
dev : dev });
strncpy(dev->name, "umn", IFNAMSIZ);
dev->init = NULL;
dev->hard_header_len = 0;
dev->addr_len = 4;
dev->type = ARPHRD_ETHER;
dev->tx_queue_len = 256;
dev->flags = IFF_NOARP;
if(register_netdev(dev))
printk(KERN_ERR "Couldn't initialize umn\n");
printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr);
}
static unsigned short slip_protocol(struct sk_buff *skbuff)
{
return(htons(ETH_P_IP));
}
static int slip_read(int fd, struct sk_buff **skb,
struct uml_net_private *lp)
{
return(slip_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu,
(struct slip_data *) &lp->user));
}
static int slip_write(int fd, struct sk_buff **skb,
struct uml_net_private *lp)
{
return(slip_user_write(fd, (*skb)->data, (*skb)->len,
(struct slip_data *) &lp->user));
}
struct net_kern_info slip_kern_info = {
init: slip_init,
protocol: slip_protocol,
read: slip_read,
write: slip_write,
};
static int slip_setup(char *str, char **mac_out, void *data)
{
struct slip_init *init = data;
*init = ((struct slip_init)
{ gate_addr : NULL });
if(str[0] != '\0')
init->gate_addr = str;
return(1);
}
static struct transport slip_transport = {
list : LIST_HEAD_INIT(slip_transport.list),
name : "slip",
setup : slip_setup,
user : &slip_user_info,
kern : &slip_kern_info,
private_size : sizeof(struct slip_data),
setup_size : sizeof(struct slip_init),
};
static int register_slip(void)
{
register_transport(&slip_transport);
return(1);
}
__initcall(register_slip);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/