Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and | |
3 | * James Leu (jleu@mindspring.net). | |
4 | * Copyright (C) 2001 by various other people who didn't put their name here. | |
5 | * Licensed under the GPL. | |
6 | */ | |
7 | ||
8 | #include "linux/kernel.h" | |
9 | #include "linux/init.h" | |
10 | #include "linux/netdevice.h" | |
11 | #include "linux/etherdevice.h" | |
12 | #include "net_kern.h" | |
13 | #include "net_user.h" | |
14 | #include "daemon.h" | |
15 | ||
16 | struct daemon_init { | |
17 | char *sock_type; | |
18 | char *ctl_sock; | |
19 | }; | |
20 | ||
42947cb9 | 21 | static void daemon_init(struct net_device *dev, void *data) |
1da177e4 LT |
22 | { |
23 | struct uml_net_private *pri; | |
24 | struct daemon_data *dpri; | |
25 | struct daemon_init *init = data; | |
26 | ||
27 | pri = dev->priv; | |
28 | dpri = (struct daemon_data *) pri->user; | |
29 | dpri->sock_type = init->sock_type; | |
30 | dpri->ctl_sock = init->ctl_sock; | |
31 | dpri->fd = -1; | |
32 | dpri->control = -1; | |
33 | dpri->dev = dev; | |
c42791b6 PBG |
34 | /* We will free this pointer. If it contains crap we're burned. */ |
35 | dpri->ctl_addr = NULL; | |
36 | dpri->data_addr = NULL; | |
37 | dpri->local_addr = NULL; | |
1da177e4 LT |
38 | |
39 | printk("daemon backend (uml_switch version %d) - %s:%s", | |
40 | SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock); | |
41 | printk("\n"); | |
42 | } | |
43 | ||
44 | static int daemon_read(int fd, struct sk_buff **skb, | |
45 | struct uml_net_private *lp) | |
46 | { | |
47 | *skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER); | |
48 | if(*skb == NULL) return(-ENOMEM); | |
49 | return(net_recvfrom(fd, (*skb)->mac.raw, | |
50 | (*skb)->dev->mtu + ETH_HEADER_OTHER)); | |
51 | } | |
52 | ||
53 | static int daemon_write(int fd, struct sk_buff **skb, | |
54 | struct uml_net_private *lp) | |
55 | { | |
56 | return(daemon_user_write(fd, (*skb)->data, (*skb)->len, | |
57 | (struct daemon_data *) &lp->user)); | |
58 | } | |
59 | ||
5e7672ec | 60 | static const struct net_kern_info daemon_kern_info = { |
1da177e4 LT |
61 | .init = daemon_init, |
62 | .protocol = eth_protocol, | |
63 | .read = daemon_read, | |
64 | .write = daemon_write, | |
65 | }; | |
66 | ||
42947cb9 | 67 | static int daemon_setup(char *str, char **mac_out, void *data) |
1da177e4 LT |
68 | { |
69 | struct daemon_init *init = data; | |
70 | char *remain; | |
71 | ||
72 | *init = ((struct daemon_init) | |
73 | { .sock_type = "unix", | |
74 | .ctl_sock = "/tmp/uml.ctl" }); | |
75 | ||
76 | remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock, | |
77 | NULL); | |
78 | if(remain != NULL) | |
79 | printk(KERN_WARNING "daemon_setup : Ignoring data socket " | |
80 | "specification\n"); | |
81 | ||
82 | return(1); | |
83 | } | |
84 | ||
85 | static struct transport daemon_transport = { | |
86 | .list = LIST_HEAD_INIT(daemon_transport.list), | |
87 | .name = "daemon", | |
88 | .setup = daemon_setup, | |
89 | .user = &daemon_user_info, | |
90 | .kern = &daemon_kern_info, | |
91 | .private_size = sizeof(struct daemon_data), | |
92 | .setup_size = sizeof(struct daemon_init), | |
93 | }; | |
94 | ||
95 | static int register_daemon(void) | |
96 | { | |
97 | register_transport(&daemon_transport); | |
f4c57a78 | 98 | return 0; |
1da177e4 LT |
99 | } |
100 | ||
101 | __initcall(register_daemon); |