2 * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL.
6 #include <linux/if_arp.h>
7 #include <linux/init.h>
8 #include <linux/netdevice.h>
16 void slip_init(struct net_device
*dev
, void *data
)
18 struct uml_net_private
*private;
19 struct slip_data
*spri
;
20 struct slip_init
*init
= data
;
23 spri
= (struct slip_data
*) private->user
;
25 memset(spri
->name
, 0, sizeof(spri
->name
));
27 spri
->gate_addr
= init
->gate_addr
;
31 slip_proto_init(&spri
->slip
);
34 dev
->header_cache_update
= NULL
;
35 dev
->hard_header_cache
= NULL
;
36 dev
->hard_header
= NULL
;
37 dev
->hard_header_len
= 0;
39 dev
->type
= ARPHRD_SLIP
;
40 dev
->tx_queue_len
= 256;
41 dev
->flags
= IFF_NOARP
;
42 printk("SLIP backend - SLIP IP = %s\n", spri
->gate_addr
);
45 static unsigned short slip_protocol(struct sk_buff
*skbuff
)
47 return htons(ETH_P_IP
);
50 static int slip_read(int fd
, struct sk_buff
*skb
, 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
, struct uml_net_private
*lp
)
58 return slip_user_write(fd
, skb
->data
, skb
->len
,
59 (struct slip_data
*) &lp
->user
);
62 const struct net_kern_info slip_kern_info
= {
64 .protocol
= slip_protocol
,
69 static int slip_setup(char *str
, char **mac_out
, void *data
)
71 struct slip_init
*init
= data
;
73 *init
= ((struct slip_init
) { .gate_addr
= NULL
});
76 init
->gate_addr
= str
;
80 static struct transport slip_transport
= {
81 .list
= LIST_HEAD_INIT(slip_transport
.list
),
84 .user
= &slip_user_info
,
85 .kern
= &slip_kern_info
,
86 .private_size
= sizeof(struct slip_data
),
87 .setup_size
= sizeof(struct slip_init
),
90 static int register_slip(void)
92 register_transport(&slip_transport
);
96 late_initcall(register_slip
);