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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * iptunnel.c "ip tunnel" | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
aba5acdf SH |
11 | */ |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
16 | #include <unistd.h> | |
d9bd1bd9 | 17 | #include <sys/types.h> |
aba5acdf | 18 | #include <sys/socket.h> |
7272ddc7 | 19 | #include <arpa/inet.h> |
aba5acdf | 20 | #include <sys/ioctl.h> |
ea71beac SH |
21 | #include <net/if.h> |
22 | #include <net/if_arp.h> | |
7272ddc7 | 23 | #include <linux/ip.h> |
aba5acdf SH |
24 | #include <linux/if_tunnel.h> |
25 | ||
26 | #include "rt_names.h" | |
27 | #include "utils.h" | |
288384f2 | 28 | #include "ip_common.h" |
d9bd1bd9 | 29 | #include "tunnel.h" |
aba5acdf SH |
30 | |
31 | static void usage(void) __attribute__((noreturn)); | |
32 | ||
33 | static void usage(void) | |
34 | { | |
b88215c4 | 35 | fprintf(stderr, "Usage: ip tunnel { add | change | del | show | prl | 6rd } [ NAME ]\n"); |
eec47608 | 36 | fprintf(stderr, " [ mode { ipip | gre | sit | isatap | vti } ] [ remote ADDR ] [ local ADDR ]\n"); |
aba5acdf | 37 | fprintf(stderr, " [ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]\n"); |
a07e9912 | 38 | fprintf(stderr, " [ prl-default ADDR ] [ prl-nodefault ADDR ] [ prl-delete ADDR ]\n"); |
b88215c4 | 39 | fprintf(stderr, " [ 6rd-prefix ADDR ] [ 6rd-relay_prefix ADDR ] [ 6rd-reset ]\n"); |
aba5acdf SH |
40 | fprintf(stderr, " [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]\n"); |
41 | fprintf(stderr, "\n"); | |
42 | fprintf(stderr, "Where: NAME := STRING\n"); | |
43 | fprintf(stderr, " ADDR := { IP_ADDRESS | any }\n"); | |
e59fd3db | 44 | fprintf(stderr, " TOS := { STRING | 00..ff | inherit | inherit/STRING | inherit/00..ff }\n"); |
aba5acdf SH |
45 | fprintf(stderr, " TTL := { 1..255 | inherit }\n"); |
46 | fprintf(stderr, " KEY := { DOTTED_QUAD | NUMBER }\n"); | |
47 | exit(-1); | |
48 | } | |
49 | ||
2520598a PS |
50 | static void set_tunnel_proto(struct ip_tunnel_parm *p, int proto) |
51 | { | |
52 | if (p->iph.protocol && p->iph.protocol != proto) { | |
a96a5d94 SH |
53 | fprintf(stderr, |
54 | "You managed to ask for more than one tunnel mode.\n"); | |
2520598a PS |
55 | exit(-1); |
56 | } | |
57 | p->iph.protocol = proto; | |
58 | } | |
59 | ||
aba5acdf SH |
60 | static int parse_args(int argc, char **argv, int cmd, struct ip_tunnel_parm *p) |
61 | { | |
62 | int count = 0; | |
26111ab1 | 63 | const char *medium = NULL; |
0bd17929 | 64 | int isatap = 0; |
aba5acdf SH |
65 | |
66 | memset(p, 0, sizeof(*p)); | |
aba5acdf SH |
67 | p->iph.version = 4; |
68 | p->iph.ihl = 5; | |
69 | #ifndef IP_DF | |
70 | #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ | |
71 | #endif | |
72 | p->iph.frag_off = htons(IP_DF); | |
73 | ||
74 | while (argc > 0) { | |
75 | if (strcmp(*argv, "mode") == 0) { | |
76 | NEXT_ARG(); | |
77 | if (strcmp(*argv, "ipip") == 0 || | |
78 | strcmp(*argv, "ip/ip") == 0) { | |
2520598a | 79 | set_tunnel_proto(p, IPPROTO_IPIP); |
aba5acdf SH |
80 | } else if (strcmp(*argv, "gre") == 0 || |
81 | strcmp(*argv, "gre/ip") == 0) { | |
2520598a | 82 | set_tunnel_proto(p, IPPROTO_GRE); |
aba5acdf SH |
83 | } else if (strcmp(*argv, "sit") == 0 || |
84 | strcmp(*argv, "ipv6/ip") == 0) { | |
2520598a | 85 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 86 | } else if (strcmp(*argv, "isatap") == 0) { |
2520598a | 87 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 88 | isatap++; |
eec47608 | 89 | } else if (strcmp(*argv, "vti") == 0) { |
2520598a | 90 | set_tunnel_proto(p, IPPROTO_IPIP); |
eec47608 | 91 | p->i_flags |= VTI_ISVTI; |
aba5acdf | 92 | } else { |
a96a5d94 SH |
93 | fprintf(stderr, |
94 | "Unknown tunnel mode \"%s\"\n", *argv); | |
aba5acdf SH |
95 | exit(-1); |
96 | } | |
97 | } else if (strcmp(*argv, "key") == 0) { | |
aba5acdf SH |
98 | NEXT_ARG(); |
99 | p->i_flags |= GRE_KEY; | |
100 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 101 | p->i_key = p->o_key = tnl_parse_key("key", *argv); |
aba5acdf | 102 | } else if (strcmp(*argv, "ikey") == 0) { |
aba5acdf SH |
103 | NEXT_ARG(); |
104 | p->i_flags |= GRE_KEY; | |
a7ed1520 | 105 | p->i_key = tnl_parse_key("ikey", *argv); |
aba5acdf | 106 | } else if (strcmp(*argv, "okey") == 0) { |
aba5acdf SH |
107 | NEXT_ARG(); |
108 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 109 | p->o_key = tnl_parse_key("okey", *argv); |
aba5acdf SH |
110 | } else if (strcmp(*argv, "seq") == 0) { |
111 | p->i_flags |= GRE_SEQ; | |
112 | p->o_flags |= GRE_SEQ; | |
113 | } else if (strcmp(*argv, "iseq") == 0) { | |
114 | p->i_flags |= GRE_SEQ; | |
115 | } else if (strcmp(*argv, "oseq") == 0) { | |
116 | p->o_flags |= GRE_SEQ; | |
117 | } else if (strcmp(*argv, "csum") == 0) { | |
118 | p->i_flags |= GRE_CSUM; | |
119 | p->o_flags |= GRE_CSUM; | |
120 | } else if (strcmp(*argv, "icsum") == 0) { | |
121 | p->i_flags |= GRE_CSUM; | |
122 | } else if (strcmp(*argv, "ocsum") == 0) { | |
123 | p->o_flags |= GRE_CSUM; | |
124 | } else if (strcmp(*argv, "nopmtudisc") == 0) { | |
125 | p->iph.frag_off = 0; | |
126 | } else if (strcmp(*argv, "pmtudisc") == 0) { | |
127 | p->iph.frag_off = htons(IP_DF); | |
128 | } else if (strcmp(*argv, "remote") == 0) { | |
129 | NEXT_ARG(); | |
57daab1e | 130 | p->iph.daddr = get_addr32(*argv); |
aba5acdf SH |
131 | } else if (strcmp(*argv, "local") == 0) { |
132 | NEXT_ARG(); | |
57daab1e | 133 | p->iph.saddr = get_addr32(*argv); |
aba5acdf SH |
134 | } else if (strcmp(*argv, "dev") == 0) { |
135 | NEXT_ARG(); | |
26111ab1 | 136 | medium = *argv; |
eddde110 | 137 | } else if (strcmp(*argv, "ttl") == 0 || |
0dd4d2b3 PS |
138 | strcmp(*argv, "hoplimit") == 0 || |
139 | strcmp(*argv, "hlim") == 0) { | |
140 | __u8 uval; | |
a96a5d94 | 141 | |
aba5acdf SH |
142 | NEXT_ARG(); |
143 | if (strcmp(*argv, "inherit") != 0) { | |
0dd4d2b3 | 144 | if (get_u8(&uval, *argv, 0)) |
aba5acdf | 145 | invarg("invalid TTL\n", *argv); |
aba5acdf SH |
146 | p->iph.ttl = uval; |
147 | } | |
148 | } else if (strcmp(*argv, "tos") == 0 || | |
eddde110 | 149 | strcmp(*argv, "tclass") == 0 || |
aba5acdf | 150 | matches(*argv, "dsfield") == 0) { |
e59fd3db | 151 | char *dsfield; |
aba5acdf | 152 | __u32 uval; |
a96a5d94 | 153 | |
aba5acdf | 154 | NEXT_ARG(); |
e59fd3db DW |
155 | dsfield = *argv; |
156 | strsep(&dsfield, "/"); | |
aba5acdf | 157 | if (strcmp(*argv, "inherit") != 0) { |
e59fd3db DW |
158 | dsfield = *argv; |
159 | p->iph.tos = 0; | |
aba5acdf SH |
160 | } else |
161 | p->iph.tos = 1; | |
e59fd3db DW |
162 | if (dsfield) { |
163 | if (rtnl_dsfield_a2n(&uval, dsfield)) | |
164 | invarg("bad TOS value", *argv); | |
165 | p->iph.tos |= uval; | |
166 | } | |
aba5acdf | 167 | } else { |
a96a5d94 | 168 | if (strcmp(*argv, "name") == 0) |
aba5acdf | 169 | NEXT_ARG(); |
a96a5d94 | 170 | else if (matches(*argv, "help") == 0) |
aba5acdf | 171 | usage(); |
a96a5d94 | 172 | |
aba5acdf SH |
173 | if (p->name[0]) |
174 | duparg2("name", *argv); | |
625df645 PS |
175 | if (get_ifname(p->name, *argv)) |
176 | invarg("\"name\" not a valid ifname", *argv); | |
aba5acdf | 177 | if (cmd == SIOCCHGTUNNEL && count == 0) { |
d17b136f | 178 | struct ip_tunnel_parm old_p = {}; |
a96a5d94 | 179 | |
d9bd1bd9 | 180 | if (tnl_get_ioctl(*argv, &old_p)) |
aba5acdf SH |
181 | return -1; |
182 | *p = old_p; | |
183 | } | |
184 | } | |
185 | count++; | |
186 | argc--; argv++; | |
187 | } | |
188 | ||
189 | ||
190 | if (p->iph.protocol == 0) { | |
191 | if (memcmp(p->name, "gre", 3) == 0) | |
192 | p->iph.protocol = IPPROTO_GRE; | |
193 | else if (memcmp(p->name, "ipip", 4) == 0) | |
194 | p->iph.protocol = IPPROTO_IPIP; | |
195 | else if (memcmp(p->name, "sit", 3) == 0) | |
196 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
197 | else if (memcmp(p->name, "isatap", 6) == 0) { |
198 | p->iph.protocol = IPPROTO_IPV6; | |
199 | isatap++; | |
eec47608 SM |
200 | } else if (memcmp(p->name, "vti", 3) == 0) { |
201 | p->iph.protocol = IPPROTO_IPIP; | |
202 | p->i_flags |= VTI_ISVTI; | |
0bd17929 | 203 | } |
aba5acdf SH |
204 | } |
205 | ||
1c28bd59 HL |
206 | if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) { |
207 | if (!(p->i_flags & VTI_ISVTI) && | |
208 | (p->iph.protocol != IPPROTO_GRE)) { | |
14645ec2 | 209 | fprintf(stderr, "Keys are not allowed with ipip and sit tunnels\n"); |
aba5acdf SH |
210 | return -1; |
211 | } | |
212 | } | |
213 | ||
26111ab1 | 214 | if (medium) { |
4b3cb962 | 215 | p->link = ll_name_to_index(medium); |
0cb6bb51 | 216 | if (p->link == 0) { |
6ddb1e8c | 217 | fprintf(stderr, "Cannot find device \"%s\"\n", medium); |
aba5acdf | 218 | return -1; |
0cb6bb51 | 219 | } |
aba5acdf SH |
220 | } |
221 | ||
222 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
223 | p->i_key = p->iph.daddr; | |
224 | p->i_flags |= GRE_KEY; | |
225 | } | |
226 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
227 | p->o_key = p->iph.daddr; | |
228 | p->o_flags |= GRE_KEY; | |
229 | } | |
230 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 231 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
232 | return -1; |
233 | } | |
eeef12c5 | 234 | if (isatap) |
0bd17929 | 235 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 236 | |
aba5acdf SH |
237 | return 0; |
238 | } | |
239 | ||
c957821b PS |
240 | static const char *tnl_defname(const struct ip_tunnel_parm *p) |
241 | { | |
242 | switch (p->iph.protocol) { | |
243 | case IPPROTO_IPIP: | |
244 | if (p->i_flags & VTI_ISVTI) | |
245 | return "ip_vti0"; | |
246 | else | |
247 | return "tunl0"; | |
248 | case IPPROTO_GRE: | |
249 | return "gre0"; | |
250 | case IPPROTO_IPV6: | |
251 | return "sit0"; | |
252 | } | |
253 | return NULL; | |
254 | } | |
aba5acdf SH |
255 | |
256 | static int do_add(int cmd, int argc, char **argv) | |
257 | { | |
258 | struct ip_tunnel_parm p; | |
c957821b | 259 | const char *basedev; |
aba5acdf SH |
260 | |
261 | if (parse_args(argc, argv, cmd, &p) < 0) | |
262 | return -1; | |
263 | ||
264 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 265 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
266 | return -1; |
267 | } | |
268 | ||
a96a5d94 SH |
269 | basedev = tnl_defname(&p); |
270 | if (!basedev) { | |
271 | fprintf(stderr, | |
272 | "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); | |
aba5acdf SH |
273 | return -1; |
274 | } | |
c957821b PS |
275 | |
276 | return tnl_add_ioctl(cmd, basedev, p.name, &p); | |
aba5acdf SH |
277 | } |
278 | ||
d9bd1bd9 | 279 | static int do_del(int argc, char **argv) |
aba5acdf SH |
280 | { |
281 | struct ip_tunnel_parm p; | |
282 | ||
283 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
284 | return -1; | |
285 | ||
c957821b | 286 | return tnl_del_ioctl(tnl_defname(&p) ? : p.name, p.name, &p); |
aba5acdf SH |
287 | } |
288 | ||
d9bd1bd9 | 289 | static void print_tunnel(struct ip_tunnel_parm *p) |
aba5acdf | 290 | { |
d17b136f | 291 | struct ip_tunnel_6rd ip6rd = {}; |
aba5acdf SH |
292 | char s1[1024]; |
293 | char s2[1024]; | |
aba5acdf | 294 | |
aba5acdf SH |
295 | /* Do not use format_host() for local addr, |
296 | * symbolic name will not be useful. | |
297 | */ | |
8de592d0 | 298 | printf("%s: %s/ip remote %s local %s", |
aba5acdf | 299 | p->name, |
d9bd1bd9 | 300 | tnl_strproto(p->iph.protocol), |
a418e451 | 301 | p->iph.daddr ? format_host_r(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any", |
2e96d2cc | 302 | p->iph.saddr ? rt_addr_n2a_r(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any"); |
aba5acdf | 303 | |
86c00faa | 304 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
d17b136f | 305 | struct ip_tunnel_prl prl[16] = {}; |
a07e9912 | 306 | int i; |
0612519e | 307 | |
a07e9912 SH |
308 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); |
309 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 310 | |
a07e9912 | 311 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) |
a96a5d94 SH |
312 | for (i = 1; i < ARRAY_SIZE(prl); i++) { |
313 | if (prl[i].addr != htonl(INADDR_ANY)) { | |
314 | printf(" %s %s ", | |
315 | (prl[i].flags & PRL_DEFAULT) ? "pdr" : "pr", | |
a418e451 | 316 | format_host(AF_INET, 4, &prl[i].addr)); |
a96a5d94 | 317 | } |
a07e9912 | 318 | } |
a07e9912 SH |
319 | } |
320 | ||
aba5acdf | 321 | if (p->link) { |
ea71beac | 322 | const char *n = ll_index_to_name(p->link); |
a96a5d94 | 323 | |
aba5acdf | 324 | if (n) |
8de592d0 | 325 | printf(" dev %s", n); |
aba5acdf SH |
326 | } |
327 | ||
328 | if (p->iph.ttl) | |
8de592d0 | 329 | printf(" ttl %d", p->iph.ttl); |
aba5acdf | 330 | else |
8de592d0 | 331 | printf(" ttl inherit"); |
ae665a52 | 332 | |
aba5acdf SH |
333 | if (p->iph.tos) { |
334 | SPRINT_BUF(b1); | |
335 | printf(" tos"); | |
04ce8d3e | 336 | if (p->iph.tos & 1) |
aba5acdf | 337 | printf(" inherit"); |
04ce8d3e PS |
338 | if (p->iph.tos & ~1) |
339 | printf("%c%s ", p->iph.tos & 1 ? '/' : ' ', | |
340 | rtnl_dsfield_n2a(p->iph.tos & ~1, b1, sizeof(b1))); | |
aba5acdf SH |
341 | } |
342 | ||
04ce8d3e | 343 | if (!(p->iph.frag_off & htons(IP_DF))) |
aba5acdf SH |
344 | printf(" nopmtudisc"); |
345 | ||
3979ef91 | 346 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
8de592d0 | 347 | printf(" 6rd-prefix %s/%u", |
b88215c4 AC |
348 | inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), |
349 | ip6rd.prefixlen); | |
350 | if (ip6rd.relay_prefix) { | |
8de592d0 | 351 | printf(" 6rd-relay_prefix %s/%u", |
a418e451 | 352 | format_host(AF_INET, 4, &ip6rd.relay_prefix), |
b88215c4 AC |
353 | ip6rd.relay_prefixlen); |
354 | } | |
355 | } | |
356 | ||
04ce8d3e | 357 | if ((p->i_flags & GRE_KEY) && (p->o_flags & GRE_KEY) && p->o_key == p->i_key) |
6f4f7c46 | 358 | printf(" key %u", ntohl(p->i_key)); |
04ce8d3e PS |
359 | else if ((p->i_flags | p->o_flags) & GRE_KEY) { |
360 | if (p->i_flags & GRE_KEY) | |
8de592d0 | 361 | printf(" ikey %u", ntohl(p->i_key)); |
04ce8d3e | 362 | if (p->o_flags & GRE_KEY) |
8de592d0 | 363 | printf(" okey %u", ntohl(p->o_key)); |
aba5acdf SH |
364 | } |
365 | ||
04ce8d3e | 366 | if (p->i_flags & GRE_SEQ) |
4cb8d030 | 367 | printf("%s Drop packets out of sequence.", _SL_); |
04ce8d3e | 368 | if (p->i_flags & GRE_CSUM) |
aba5acdf | 369 | printf("%s Checksum in received packet is required.", _SL_); |
04ce8d3e | 370 | if (p->o_flags & GRE_SEQ) |
aba5acdf | 371 | printf("%s Sequence packets on output.", _SL_); |
04ce8d3e | 372 | if (p->o_flags & GRE_CSUM) |
aba5acdf SH |
373 | printf("%s Checksum output packets.", _SL_); |
374 | } | |
375 | ||
376 | static int do_tunnels_list(struct ip_tunnel_parm *p) | |
377 | { | |
aba5acdf | 378 | char buf[512]; |
c4527d7b | 379 | int err = -1; |
aba5acdf | 380 | FILE *fp = fopen("/proc/net/dev", "r"); |
a96a5d94 | 381 | |
aba5acdf SH |
382 | if (fp == NULL) { |
383 | perror("fopen"); | |
384 | return -1; | |
385 | } | |
386 | ||
38c867d2 SH |
387 | /* skip header lines */ |
388 | if (!fgets(buf, sizeof(buf), fp) || | |
389 | !fgets(buf, sizeof(buf), fp)) { | |
390 | fprintf(stderr, "/proc/net/dev read error\n"); | |
c4527d7b | 391 | goto end; |
38c867d2 | 392 | } |
aba5acdf SH |
393 | |
394 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
c4527d7b | 395 | char name[IFNAMSIZ]; |
ea71beac | 396 | int index, type; |
d17b136f | 397 | struct ip_tunnel_parm p1 = {}; |
aba5acdf | 398 | char *ptr; |
c4527d7b | 399 | |
aba5acdf | 400 | buf[sizeof(buf) - 1] = 0; |
a96a5d94 SH |
401 | ptr = strchr(buf, ':'); |
402 | if (ptr == NULL || | |
aba5acdf | 403 | (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { |
14645ec2 | 404 | fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n"); |
c4527d7b | 405 | goto end; |
aba5acdf | 406 | } |
aba5acdf SH |
407 | if (p->name[0] && strcmp(p->name, name)) |
408 | continue; | |
ea71beac SH |
409 | index = ll_name_to_index(name); |
410 | if (index == 0) | |
411 | continue; | |
412 | type = ll_index_to_type(index); | |
aba5acdf | 413 | if (type == -1) { |
14645ec2 | 414 | fprintf(stderr, "Failed to get type of \"%s\"\n", name); |
aba5acdf SH |
415 | continue; |
416 | } | |
417 | if (type != ARPHRD_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT) | |
418 | continue; | |
d9bd1bd9 | 419 | if (tnl_get_ioctl(name, &p1)) |
aba5acdf SH |
420 | continue; |
421 | if ((p->link && p1.link != p->link) || | |
422 | (p->name[0] && strcmp(p1.name, p->name)) || | |
423 | (p->iph.daddr && p1.iph.daddr != p->iph.daddr) || | |
424 | (p->iph.saddr && p1.iph.saddr != p->iph.saddr) || | |
425 | (p->i_key && p1.i_key != p->i_key)) | |
426 | continue; | |
427 | print_tunnel(&p1); | |
7d6aadcd PS |
428 | if (show_stats) |
429 | tnl_print_stats(ptr); | |
aba5acdf SH |
430 | printf("\n"); |
431 | } | |
c4527d7b PS |
432 | err = 0; |
433 | end: | |
297452a1 | 434 | fclose(fp); |
c4527d7b | 435 | return err; |
aba5acdf SH |
436 | } |
437 | ||
438 | static int do_show(int argc, char **argv) | |
439 | { | |
aba5acdf | 440 | struct ip_tunnel_parm p; |
c957821b | 441 | const char *basedev; |
aba5acdf | 442 | |
ea71beac | 443 | ll_init_map(&rth); |
aba5acdf SH |
444 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) |
445 | return -1; | |
446 | ||
a96a5d94 SH |
447 | basedev = tnl_defname(&p); |
448 | if (!basedev) | |
c957821b PS |
449 | return do_tunnels_list(&p); |
450 | ||
451 | if (tnl_get_ioctl(p.name[0] ? p.name : basedev, &p)) | |
aba5acdf SH |
452 | return -1; |
453 | ||
454 | print_tunnel(&p); | |
455 | printf("\n"); | |
456 | return 0; | |
457 | } | |
458 | ||
a07e9912 SH |
459 | static int do_prl(int argc, char **argv) |
460 | { | |
d17b136f | 461 | struct ip_tunnel_prl p = {}; |
a07e9912 | 462 | int count = 0; |
a07e9912 | 463 | int cmd = 0; |
26111ab1 | 464 | const char *medium = NULL; |
a07e9912 SH |
465 | |
466 | while (argc > 0) { | |
467 | if (strcmp(*argv, "prl-default") == 0) { | |
468 | NEXT_ARG(); | |
469 | cmd = SIOCADDPRL; | |
470 | p.addr = get_addr32(*argv); | |
471 | p.flags |= PRL_DEFAULT; | |
472 | count++; | |
473 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
474 | NEXT_ARG(); | |
475 | cmd = SIOCADDPRL; | |
476 | p.addr = get_addr32(*argv); | |
477 | count++; | |
478 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
479 | NEXT_ARG(); | |
480 | cmd = SIOCDELPRL; | |
481 | p.addr = get_addr32(*argv); | |
482 | count++; | |
483 | } else if (strcmp(*argv, "dev") == 0) { | |
484 | NEXT_ARG(); | |
625df645 PS |
485 | if (check_ifname(*argv)) |
486 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 487 | medium = *argv; |
a07e9912 | 488 | } else { |
a96a5d94 SH |
489 | fprintf(stderr, |
490 | "Invalid PRL parameter \"%s\"\n", *argv); | |
a07e9912 SH |
491 | exit(-1); |
492 | } | |
493 | if (count > 1) { | |
a96a5d94 SH |
494 | fprintf(stderr, |
495 | "One PRL entry at a time\n"); | |
a07e9912 SH |
496 | exit(-1); |
497 | } | |
498 | argc--; argv++; | |
499 | } | |
26111ab1 | 500 | if (!medium) { |
14645ec2 | 501 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
502 | exit(-1); |
503 | } | |
504 | ||
505 | return tnl_prl_ioctl(cmd, medium, &p); | |
506 | } | |
507 | ||
b88215c4 AC |
508 | static int do_6rd(int argc, char **argv) |
509 | { | |
d17b136f | 510 | struct ip_tunnel_6rd ip6rd = {}; |
b88215c4 | 511 | int cmd = 0; |
26111ab1 | 512 | const char *medium = NULL; |
b88215c4 AC |
513 | inet_prefix prefix; |
514 | ||
b88215c4 AC |
515 | while (argc > 0) { |
516 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
517 | NEXT_ARG(); | |
518 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
519 | invarg("invalid 6rd_prefix\n", *argv); | |
520 | cmd = SIOCADD6RD; | |
521 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
522 | ip6rd.prefixlen = prefix.bitlen; | |
523 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
524 | NEXT_ARG(); | |
525 | if (get_prefix(&prefix, *argv, AF_INET)) | |
526 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
527 | cmd = SIOCADD6RD; | |
528 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
529 | ip6rd.relay_prefixlen = prefix.bitlen; | |
530 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
531 | cmd = SIOCDEL6RD; | |
532 | } else if (strcmp(*argv, "dev") == 0) { | |
533 | NEXT_ARG(); | |
625df645 PS |
534 | if (check_ifname(*argv)) |
535 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 536 | medium = *argv; |
b88215c4 | 537 | } else { |
a96a5d94 SH |
538 | fprintf(stderr, |
539 | "Invalid 6RD parameter \"%s\"\n", *argv); | |
b88215c4 AC |
540 | exit(-1); |
541 | } | |
542 | argc--; argv++; | |
543 | } | |
26111ab1 | 544 | if (!medium) { |
14645ec2 | 545 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
546 | exit(-1); |
547 | } | |
548 | ||
549 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
550 | } | |
551 | ||
a96a5d94 SH |
552 | static int tunnel_mode_is_ipv6(char *tunnel_mode) |
553 | { | |
554 | static const char * const ipv6_modes[] = { | |
cc9c1dfa KS |
555 | "ipv6/ipv6", "ip6ip6", |
556 | "vti6", | |
557 | "ip/ipv6", "ipv4/ipv6", "ipip6", "ip4ip6", | |
558 | "ip6gre", "gre/ipv6", | |
559 | "any/ipv6", "any" | |
560 | }; | |
561 | int i; | |
562 | ||
a96a5d94 | 563 | for (i = 0; i < ARRAY_SIZE(ipv6_modes); i++) { |
cc9c1dfa KS |
564 | if (strcmp(ipv6_modes[i], tunnel_mode) == 0) |
565 | return 1; | |
566 | } | |
567 | return 0; | |
568 | } | |
569 | ||
aba5acdf SH |
570 | int do_iptunnel(int argc, char **argv) |
571 | { | |
cc9c1dfa KS |
572 | int i; |
573 | ||
574 | for (i = 0; i < argc - 1; i++) { | |
575 | if (strcmp(argv[i], "mode") == 0) { | |
576 | if (tunnel_mode_is_ipv6(argv[i + 1])) | |
577 | preferred_family = AF_INET6; | |
578 | break; | |
579 | } | |
580 | } | |
d9bd1bd9 MN |
581 | switch (preferred_family) { |
582 | case AF_UNSPEC: | |
583 | preferred_family = AF_INET; | |
584 | break; | |
585 | case AF_INET: | |
586 | break; | |
288384f2 MN |
587 | /* |
588 | * This is silly enough but we have no easy way to make it | |
589 | * protocol-independent because of unarranged structure between | |
590 | * IPv4 and IPv6. | |
591 | */ | |
592 | case AF_INET6: | |
593 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 594 | default: |
14645ec2 | 595 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
596 | exit(-1); |
597 | } | |
598 | ||
aba5acdf SH |
599 | if (argc > 0) { |
600 | if (matches(*argv, "add") == 0) | |
04ce8d3e | 601 | return do_add(SIOCADDTUNNEL, argc - 1, argv + 1); |
aba5acdf | 602 | if (matches(*argv, "change") == 0) |
04ce8d3e | 603 | return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1); |
6e30461e | 604 | if (matches(*argv, "delete") == 0) |
04ce8d3e | 605 | return do_del(argc - 1, argv + 1); |
aba5acdf SH |
606 | if (matches(*argv, "show") == 0 || |
607 | matches(*argv, "lst") == 0 || | |
608 | matches(*argv, "list") == 0) | |
04ce8d3e | 609 | return do_show(argc - 1, argv + 1); |
a07e9912 | 610 | if (matches(*argv, "prl") == 0) |
04ce8d3e | 611 | return do_prl(argc - 1, argv + 1); |
b88215c4 | 612 | if (matches(*argv, "6rd") == 0) |
04ce8d3e | 613 | return do_6rd(argc - 1, argv + 1); |
aba5acdf SH |
614 | if (matches(*argv, "help") == 0) |
615 | usage(); | |
616 | } else | |
617 | return do_show(0, NULL); | |
618 | ||
14645ec2 | 619 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
620 | exit(-1); |
621 | } |