]>
Commit | Line | Data |
---|---|---|
cd1ae0e4 JD |
1 | /* |
2 | * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | |
3 | * Licensed under the GPL. | |
4 | */ | |
5 | ||
6 | #include <linux/if_arp.h> | |
7 | #include <linux/init.h> | |
8 | #include <linux/netdevice.h> | |
37185b33 | 9 | #include <net_kern.h> |
1da177e4 LT |
10 | #include "slip.h" |
11 | ||
12 | struct slip_init { | |
13 | char *gate_addr; | |
14 | }; | |
15 | ||
074a0db8 | 16 | static void slip_init(struct net_device *dev, void *data) |
1da177e4 LT |
17 | { |
18 | struct uml_net_private *private; | |
19 | struct slip_data *spri; | |
20 | struct slip_init *init = data; | |
21 | ||
17c324fa | 22 | private = netdev_priv(dev); |
1da177e4 | 23 | spri = (struct slip_data *) private->user; |
854e981c PBG |
24 | |
25 | memset(spri->name, 0, sizeof(spri->name)); | |
26 | spri->addr = NULL; | |
27 | spri->gate_addr = init->gate_addr; | |
28 | spri->slave = -1; | |
29 | spri->dev = dev; | |
30 | ||
31 | slip_proto_init(&spri->slip); | |
1da177e4 | 32 | |
1da177e4 | 33 | dev->hard_header_len = 0; |
be8ad5a4 | 34 | dev->header_ops = NULL; |
a3c77c67 JD |
35 | dev->addr_len = 0; |
36 | dev->type = ARPHRD_SLIP; | |
1da177e4 LT |
37 | dev->tx_queue_len = 256; |
38 | dev->flags = IFF_NOARP; | |
39 | printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr); | |
40 | } | |
41 | ||
42 | static unsigned short slip_protocol(struct sk_buff *skbuff) | |
43 | { | |
cd1ae0e4 | 44 | return htons(ETH_P_IP); |
1da177e4 LT |
45 | } |
46 | ||
b53f35a8 | 47 | static int slip_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) |
1da177e4 | 48 | { |
b53f35a8 | 49 | return slip_user_read(fd, skb_mac_header(skb), skb->dev->mtu, |
cd1ae0e4 | 50 | (struct slip_data *) &lp->user); |
1da177e4 LT |
51 | } |
52 | ||
b53f35a8 | 53 | static int slip_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) |
1da177e4 | 54 | { |
b53f35a8 | 55 | return slip_user_write(fd, skb->data, skb->len, |
cd1ae0e4 | 56 | (struct slip_data *) &lp->user); |
1da177e4 LT |
57 | } |
58 | ||
074a0db8 | 59 | static const struct net_kern_info slip_kern_info = { |
1da177e4 LT |
60 | .init = slip_init, |
61 | .protocol = slip_protocol, | |
62 | .read = slip_read, | |
63 | .write = slip_write, | |
64 | }; | |
65 | ||
66 | static int slip_setup(char *str, char **mac_out, void *data) | |
67 | { | |
68 | struct slip_init *init = data; | |
69 | ||
cd1ae0e4 | 70 | *init = ((struct slip_init) { .gate_addr = NULL }); |
1da177e4 | 71 | |
cd1ae0e4 | 72 | if (str[0] != '\0') |
1da177e4 | 73 | init->gate_addr = str; |
cd1ae0e4 | 74 | return 1; |
1da177e4 LT |
75 | } |
76 | ||
77 | static struct transport slip_transport = { | |
78 | .list = LIST_HEAD_INIT(slip_transport.list), | |
79 | .name = "slip", | |
80 | .setup = slip_setup, | |
81 | .user = &slip_user_info, | |
82 | .kern = &slip_kern_info, | |
83 | .private_size = sizeof(struct slip_data), | |
84 | .setup_size = sizeof(struct slip_init), | |
85 | }; | |
86 | ||
87 | static int register_slip(void) | |
88 | { | |
89 | register_transport(&slip_transport); | |
f4c57a78 | 90 | return 0; |
1da177e4 LT |
91 | } |
92 | ||
8210fd2a | 93 | late_initcall(register_slip); |