1 #include "linux/kernel.h"
2 #include "linux/stddef.h"
3 #include "linux/init.h"
4 #include "linux/netdevice.h"
5 #include "linux/if_arp.h"
15 void slip_init(struct net_device *dev, void *data)
17 struct uml_net_private *private;
18 struct slip_data *spri;
19 struct slip_init *init = data;
22 spri = (struct slip_data *) private->user;
24 memset(spri->name, 0, sizeof(spri->name));
26 spri->gate_addr = init->gate_addr;
30 slip_proto_init(&spri->slip);
33 dev->header_cache_update = NULL;
34 dev->hard_header_cache = NULL;
35 dev->hard_header = NULL;
36 dev->hard_header_len = 0;
38 dev->type = ARPHRD_SLIP;
39 dev->tx_queue_len = 256;
40 dev->flags = IFF_NOARP;
41 printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr);
44 static unsigned short slip_protocol(struct sk_buff *skbuff)
46 return(htons(ETH_P_IP));
49 static int slip_read(int fd, struct sk_buff **skb,
50 struct uml_net_private *lp)
52 return(slip_user_read(fd, skb_mac_header(*skb), (*skb)->dev->mtu,
53 (struct slip_data *) &lp->user));
56 static int slip_write(int fd, struct sk_buff **skb,
57 struct uml_net_private *lp)
59 return(slip_user_write(fd, (*skb)->data, (*skb)->len,
60 (struct slip_data *) &lp->user));
63 const struct net_kern_info slip_kern_info = {
65 .protocol = slip_protocol,
70 static int slip_setup(char *str, char **mac_out, void *data)
72 struct slip_init *init = data;
74 *init = ((struct slip_init)
75 { .gate_addr = NULL });
78 init->gate_addr = str;
82 static struct transport slip_transport = {
83 .list = LIST_HEAD_INIT(slip_transport.list),
86 .user = &slip_user_info,
87 .kern = &slip_kern_info,
88 .private_size = sizeof(struct slip_data),
89 .setup_size = sizeof(struct slip_init),
92 static int register_slip(void)
94 register_transport(&slip_transport);
98 late_initcall(register_slip);