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>
9 #include <linux/string.h>
15 struct arg_list_dummy_wrapper argw
; /* XXX should be simpler... */
18 void slirp_init(struct net_device
*dev
, void *data
)
20 struct uml_net_private
*private;
21 struct slirp_data
*spri
;
22 struct slirp_init
*init
= data
;
26 spri
= (struct slirp_data
*) private->user
;
28 spri
->argw
= init
->argw
;
33 slip_proto_init(&spri
->slip
);
36 dev
->hard_header_len
= 0;
37 dev
->header_cache_update
= NULL
;
38 dev
->hard_header_cache
= NULL
;
39 dev
->hard_header
= NULL
;
41 dev
->type
= ARPHRD_SLIP
;
42 dev
->tx_queue_len
= 256;
43 dev
->flags
= IFF_NOARP
;
44 printk("SLIRP backend - command line:");
45 for (i
= 0; spri
->argw
.argv
[i
] != NULL
; i
++)
46 printk(" '%s'",spri
->argw
.argv
[i
]);
50 static unsigned short slirp_protocol(struct sk_buff
*skbuff
)
52 return htons(ETH_P_IP
);
55 static int slirp_read(int fd
, struct sk_buff
*skb
, struct uml_net_private
*lp
)
57 return slirp_user_read(fd
, skb_mac_header(skb
), skb
->dev
->mtu
,
58 (struct slirp_data
*) &lp
->user
);
61 static int slirp_write(int fd
, struct sk_buff
*skb
, struct uml_net_private
*lp
)
63 return slirp_user_write(fd
, skb
->data
, skb
->len
,
64 (struct slirp_data
*) &lp
->user
);
67 const struct net_kern_info slirp_kern_info
= {
69 .protocol
= slirp_protocol
,
74 static int slirp_setup(char *str
, char **mac_out
, void *data
)
76 struct slirp_init
*init
= data
;
79 *init
= ((struct slirp_init
) { .argw
= { { "slirp", NULL
} } });
81 str
= split_if_spec(str
, mac_out
, NULL
);
83 if (str
== NULL
) /* no command line given after MAC addr */
87 if (i
>= SLIRP_MAX_ARGS
- 1) {
88 printk(KERN_WARNING
"slirp_setup: truncating slirp "
92 init
->argw
.argv
[i
++] = str
;
93 while(*str
&& *str
!=',') {
103 init
->argw
.argv
[i
] = NULL
;
107 static struct transport slirp_transport
= {
108 .list
= LIST_HEAD_INIT(slirp_transport
.list
),
110 .setup
= slirp_setup
,
111 .user
= &slirp_user_info
,
112 .kern
= &slirp_kern_info
,
113 .private_size
= sizeof(struct slirp_data
),
114 .setup_size
= sizeof(struct slirp_init
),
117 static int register_slirp(void)
119 register_transport(&slirp_transport
);
123 late_initcall(register_slirp
);