Commit | Line | Data |
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1da177e4 LT |
1 | #include "linux/kernel.h" |
2 | #include "linux/stddef.h" | |
3 | #include "linux/init.h" | |
4 | #include "linux/netdevice.h" | |
5 | #include "linux/if_arp.h" | |
6 | #include "net_kern.h" | |
7 | #include "net_user.h" | |
8 | #include "kern.h" | |
9 | #include "slirp.h" | |
10 | ||
11 | struct slirp_init { | |
12 | struct arg_list_dummy_wrapper argw; /* XXX should be simpler... */ | |
13 | }; | |
14 | ||
15 | void slirp_init(struct net_device *dev, void *data) | |
16 | { | |
17 | struct uml_net_private *private; | |
18 | struct slirp_data *spri; | |
19 | struct slirp_init *init = data; | |
20 | int i; | |
21 | ||
22 | private = dev->priv; | |
23 | spri = (struct slirp_data *) private->user; | |
854e981c PBG |
24 | |
25 | spri->argw = init->argw; | |
26 | spri->pid = -1; | |
27 | spri->slave = -1; | |
28 | spri->dev = dev; | |
29 | ||
30 | slip_proto_init(&spri->slip); | |
1da177e4 LT |
31 | |
32 | dev->init = NULL; | |
33 | dev->hard_header_len = 0; | |
34 | dev->header_cache_update = NULL; | |
35 | dev->hard_header_cache = NULL; | |
36 | dev->hard_header = NULL; | |
37 | dev->addr_len = 0; | |
38 | dev->type = ARPHRD_SLIP; | |
39 | dev->tx_queue_len = 256; | |
40 | dev->flags = IFF_NOARP; | |
41 | printk("SLIRP backend - command line:"); | |
42 | for(i=0;spri->argw.argv[i]!=NULL;i++) { | |
43 | printk(" '%s'",spri->argw.argv[i]); | |
44 | } | |
45 | printk("\n"); | |
46 | } | |
47 | ||
48 | static unsigned short slirp_protocol(struct sk_buff *skbuff) | |
49 | { | |
50 | return(htons(ETH_P_IP)); | |
51 | } | |
52 | ||
53 | static int slirp_read(int fd, struct sk_buff **skb, | |
54 | struct uml_net_private *lp) | |
55 | { | |
56 | return(slirp_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu, | |
57 | (struct slirp_data *) &lp->user)); | |
58 | } | |
59 | ||
60 | static int slirp_write(int fd, struct sk_buff **skb, | |
61 | struct uml_net_private *lp) | |
62 | { | |
63 | return(slirp_user_write(fd, (*skb)->data, (*skb)->len, | |
64 | (struct slirp_data *) &lp->user)); | |
65 | } | |
66 | ||
5e7672ec | 67 | const struct net_kern_info slirp_kern_info = { |
1da177e4 LT |
68 | .init = slirp_init, |
69 | .protocol = slirp_protocol, | |
70 | .read = slirp_read, | |
71 | .write = slirp_write, | |
72 | }; | |
73 | ||
74 | static int slirp_setup(char *str, char **mac_out, void *data) | |
75 | { | |
76 | struct slirp_init *init = data; | |
77 | int i=0; | |
78 | ||
79 | *init = ((struct slirp_init) | |
4d338e1a | 80 | { .argw = { { "slirp", NULL } } }); |
1da177e4 LT |
81 | |
82 | str = split_if_spec(str, mac_out, NULL); | |
83 | ||
84 | if(str == NULL) { /* no command line given after MAC addr */ | |
85 | return(1); | |
86 | } | |
87 | ||
88 | do { | |
89 | if(i>=SLIRP_MAX_ARGS-1) { | |
90 | printk("slirp_setup: truncating slirp arguments\n"); | |
91 | break; | |
92 | } | |
93 | init->argw.argv[i++] = str; | |
94 | while(*str && *str!=',') { | |
95 | if(*str=='_') *str=' '; | |
96 | str++; | |
97 | } | |
98 | if(*str!=',') | |
99 | break; | |
100 | *str++='\0'; | |
101 | } while(1); | |
102 | init->argw.argv[i]=NULL; | |
103 | return(1); | |
104 | } | |
105 | ||
106 | static struct transport slirp_transport = { | |
107 | .list = LIST_HEAD_INIT(slirp_transport.list), | |
108 | .name = "slirp", | |
109 | .setup = slirp_setup, | |
110 | .user = &slirp_user_info, | |
111 | .kern = &slirp_kern_info, | |
112 | .private_size = sizeof(struct slirp_data), | |
113 | .setup_size = sizeof(struct slirp_init), | |
114 | }; | |
115 | ||
116 | static int register_slirp(void) | |
117 | { | |
118 | register_transport(&slirp_transport); | |
f4c57a78 | 119 | return 0; |
1da177e4 LT |
120 | } |
121 | ||
122 | __initcall(register_slirp); |