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,
56 struct uml_net_private *lp)
58 return slirp_user_read(fd, skb_mac_header(*skb), (*skb)->dev->mtu,
59 (struct slirp_data *) &lp->user);
62 static int slirp_write(int fd, struct sk_buff **skb,
63 struct uml_net_private *lp)
65 return slirp_user_write(fd, (*skb)->data, (*skb)->len,
66 (struct slirp_data *) &lp->user);
69 const struct net_kern_info slirp_kern_info = {
71 .protocol = slirp_protocol,
76 static int slirp_setup(char *str, char **mac_out, void *data)
78 struct slirp_init *init = data;
81 *init = ((struct slirp_init) { .argw = { { "slirp", NULL } } });
83 str = split_if_spec(str, mac_out, NULL);
85 if (str == NULL) /* no command line given after MAC addr */
89 if (i >= SLIRP_MAX_ARGS - 1) {
90 printk(KERN_WARNING "slirp_setup: truncating slirp "
94 init->argw.argv[i++] = str;
95 while(*str && *str!=',') {
105 init->argw.argv[i] = NULL;
109 static struct transport slirp_transport = {
110 .list = LIST_HEAD_INIT(slirp_transport.list),
112 .setup = slirp_setup,
113 .user = &slirp_user_info,
114 .kern = &slirp_kern_info,
115 .private_size = sizeof(struct slirp_data),
116 .setup_size = sizeof(struct slirp_init),
119 static int register_slirp(void)
121 register_transport(&slirp_transport);
125 late_initcall(register_slirp);