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d9bd1bd9 MN |
1 | /* |
2 | * Copyright (C)2006 USAGI/WIDE Project | |
ae665a52 | 3 | * |
d9bd1bd9 MN |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
ae665a52 | 8 | * |
d9bd1bd9 MN |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
ae665a52 | 13 | * |
d9bd1bd9 MN |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | /* | |
19 | * split from ip_tunnel.c | |
20 | */ | |
21 | /* | |
22 | * Author: | |
23 | * Masahide NAKAMURA @USAGI | |
24 | */ | |
25 | ||
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | #include <unistd.h> | |
29 | #include <sys/types.h> | |
30 | #include <sys/socket.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <netinet/in.h> | |
33 | #include <linux/if.h> | |
34 | #include <linux/ip.h> | |
35 | #include <linux/if_tunnel.h> | |
36 | ||
37 | #include "utils.h" | |
38 | #include "tunnel.h" | |
39 | ||
40 | const char *tnl_strproto(__u8 proto) | |
41 | { | |
42 | static char buf[16]; | |
43 | ||
44 | switch (proto) { | |
45 | case IPPROTO_IPIP: | |
46 | strcpy(buf, "ip"); | |
47 | break; | |
48 | case IPPROTO_GRE: | |
49 | strcpy(buf, "gre"); | |
50 | break; | |
51 | case IPPROTO_IPV6: | |
52 | strcpy(buf, "ipv6"); | |
53 | break; | |
0b959b0f YH |
54 | case 0: |
55 | strcpy(buf, "any"); | |
56 | break; | |
d9bd1bd9 MN |
57 | default: |
58 | strcpy(buf, "unknown"); | |
59 | break; | |
60 | } | |
61 | ||
62 | return buf; | |
63 | } | |
64 | ||
65 | int tnl_ioctl_get_ifindex(const char *dev) | |
66 | { | |
67 | struct ifreq ifr; | |
68 | int fd; | |
69 | int err; | |
70 | ||
71 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); | |
72 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
73 | err = ioctl(fd, SIOCGIFINDEX, &ifr); | |
74 | if (err) { | |
75 | perror("ioctl"); | |
76 | return 0; | |
77 | } | |
78 | close(fd); | |
79 | return ifr.ifr_ifindex; | |
80 | } | |
81 | ||
82 | int tnl_ioctl_get_iftype(const char *dev) | |
83 | { | |
84 | struct ifreq ifr; | |
85 | int fd; | |
86 | int err; | |
87 | ||
88 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); | |
89 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
90 | err = ioctl(fd, SIOCGIFHWADDR, &ifr); | |
91 | if (err) { | |
92 | perror("ioctl"); | |
93 | return -1; | |
94 | } | |
95 | close(fd); | |
96 | return ifr.ifr_addr.sa_family; | |
97 | } | |
98 | ||
99 | ||
100 | char * tnl_ioctl_get_ifname(int idx) | |
101 | { | |
102 | static struct ifreq ifr; | |
103 | int fd; | |
104 | int err; | |
105 | ||
106 | ifr.ifr_ifindex = idx; | |
107 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
108 | err = ioctl(fd, SIOCGIFNAME, &ifr); | |
109 | if (err) { | |
110 | perror("ioctl"); | |
111 | return NULL; | |
112 | } | |
113 | close(fd); | |
114 | return ifr.ifr_name; | |
115 | } | |
116 | ||
117 | int tnl_get_ioctl(const char *basedev, void *p) | |
118 | { | |
119 | struct ifreq ifr; | |
120 | int fd; | |
121 | int err; | |
122 | ||
123 | strncpy(ifr.ifr_name, basedev, IFNAMSIZ); | |
124 | ifr.ifr_ifru.ifru_data = (void*)p; | |
125 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
126 | err = ioctl(fd, SIOCGETTUNNEL, &ifr); | |
127 | if (err) | |
128 | perror("ioctl"); | |
129 | close(fd); | |
130 | return err; | |
131 | } | |
132 | ||
133 | int tnl_add_ioctl(int cmd, const char *basedev, const char *name, void *p) | |
134 | { | |
135 | struct ifreq ifr; | |
136 | int fd; | |
137 | int err; | |
138 | ||
139 | if (cmd == SIOCCHGTUNNEL && name[0]) | |
140 | strncpy(ifr.ifr_name, name, IFNAMSIZ); | |
141 | else | |
142 | strncpy(ifr.ifr_name, basedev, IFNAMSIZ); | |
143 | ifr.ifr_ifru.ifru_data = p; | |
144 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
145 | err = ioctl(fd, cmd, &ifr); | |
146 | if (err) | |
147 | perror("ioctl"); | |
148 | close(fd); | |
149 | return err; | |
150 | } | |
151 | ||
152 | int tnl_del_ioctl(const char *basedev, const char *name, void *p) | |
153 | { | |
154 | struct ifreq ifr; | |
155 | int fd; | |
156 | int err; | |
157 | ||
158 | if (name[0]) | |
159 | strncpy(ifr.ifr_name, name, IFNAMSIZ); | |
160 | else | |
161 | strncpy(ifr.ifr_name, basedev, IFNAMSIZ); | |
162 | ifr.ifr_ifru.ifru_data = p; | |
163 | fd = socket(preferred_family, SOCK_DGRAM, 0); | |
164 | err = ioctl(fd, SIOCDELTUNNEL, &ifr); | |
165 | if (err) | |
166 | perror("ioctl"); | |
167 | close(fd); | |
168 | return err; | |
169 | } |