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; | |
24 | *spri = ((struct slirp_data) | |
25 | { .argw = init->argw, | |
26 | .pid = -1, | |
27 | .slave = -1, | |
a3c77c67 | 28 | .slip = SLIP_PROTO_INIT, |
1da177e4 LT |
29 | .dev = dev }); |
30 | ||
31 | dev->init = NULL; | |
32 | dev->hard_header_len = 0; | |
33 | dev->header_cache_update = NULL; | |
34 | dev->hard_header_cache = NULL; | |
35 | dev->hard_header = NULL; | |
36 | dev->addr_len = 0; | |
37 | dev->type = ARPHRD_SLIP; | |
38 | dev->tx_queue_len = 256; | |
39 | dev->flags = IFF_NOARP; | |
40 | printk("SLIRP backend - command line:"); | |
41 | for(i=0;spri->argw.argv[i]!=NULL;i++) { | |
42 | printk(" '%s'",spri->argw.argv[i]); | |
43 | } | |
44 | printk("\n"); | |
45 | } | |
46 | ||
47 | static unsigned short slirp_protocol(struct sk_buff *skbuff) | |
48 | { | |
49 | return(htons(ETH_P_IP)); | |
50 | } | |
51 | ||
52 | static int slirp_read(int fd, struct sk_buff **skb, | |
53 | struct uml_net_private *lp) | |
54 | { | |
55 | return(slirp_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu, | |
56 | (struct slirp_data *) &lp->user)); | |
57 | } | |
58 | ||
59 | static int slirp_write(int fd, struct sk_buff **skb, | |
60 | struct uml_net_private *lp) | |
61 | { | |
62 | return(slirp_user_write(fd, (*skb)->data, (*skb)->len, | |
63 | (struct slirp_data *) &lp->user)); | |
64 | } | |
65 | ||
66 | struct net_kern_info slirp_kern_info = { | |
67 | .init = slirp_init, | |
68 | .protocol = slirp_protocol, | |
69 | .read = slirp_read, | |
70 | .write = slirp_write, | |
71 | }; | |
72 | ||
73 | static int slirp_setup(char *str, char **mac_out, void *data) | |
74 | { | |
75 | struct slirp_init *init = data; | |
76 | int i=0; | |
77 | ||
78 | *init = ((struct slirp_init) | |
79 | { argw : { { "slirp", NULL } } }); | |
80 | ||
81 | str = split_if_spec(str, mac_out, NULL); | |
82 | ||
83 | if(str == NULL) { /* no command line given after MAC addr */ | |
84 | return(1); | |
85 | } | |
86 | ||
87 | do { | |
88 | if(i>=SLIRP_MAX_ARGS-1) { | |
89 | printk("slirp_setup: truncating slirp arguments\n"); | |
90 | break; | |
91 | } | |
92 | init->argw.argv[i++] = str; | |
93 | while(*str && *str!=',') { | |
94 | if(*str=='_') *str=' '; | |
95 | str++; | |
96 | } | |
97 | if(*str!=',') | |
98 | break; | |
99 | *str++='\0'; | |
100 | } while(1); | |
101 | init->argw.argv[i]=NULL; | |
102 | return(1); | |
103 | } | |
104 | ||
105 | static struct transport slirp_transport = { | |
106 | .list = LIST_HEAD_INIT(slirp_transport.list), | |
107 | .name = "slirp", | |
108 | .setup = slirp_setup, | |
109 | .user = &slirp_user_info, | |
110 | .kern = &slirp_kern_info, | |
111 | .private_size = sizeof(struct slirp_data), | |
112 | .setup_size = sizeof(struct slirp_init), | |
113 | }; | |
114 | ||
115 | static int register_slirp(void) | |
116 | { | |
117 | register_transport(&slirp_transport); | |
118 | return(1); | |
119 | } | |
120 | ||
121 | __initcall(register_slirp); | |
122 | ||
123 | /* | |
124 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
125 | * Emacs will notice this stuff at the end of the file and automatically | |
126 | * adjust the settings for this buffer only. This must remain at the end | |
127 | * of the file. | |
128 | * --------------------------------------------------------------------------- | |
129 | * Local variables: | |
130 | * c-file-style: "linux" | |
131 | * End: | |
132 | */ |