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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; | |
63 | char medium[IFNAMSIZ]; | |
0bd17929 | 64 | int isatap = 0; |
aba5acdf SH |
65 | |
66 | memset(p, 0, sizeof(*p)); | |
67 | memset(&medium, 0, sizeof(medium)); | |
68 | ||
69 | p->iph.version = 4; | |
70 | p->iph.ihl = 5; | |
71 | #ifndef IP_DF | |
72 | #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ | |
73 | #endif | |
74 | p->iph.frag_off = htons(IP_DF); | |
75 | ||
76 | while (argc > 0) { | |
77 | if (strcmp(*argv, "mode") == 0) { | |
78 | NEXT_ARG(); | |
79 | if (strcmp(*argv, "ipip") == 0 || | |
80 | strcmp(*argv, "ip/ip") == 0) { | |
2520598a | 81 | set_tunnel_proto(p, IPPROTO_IPIP); |
aba5acdf SH |
82 | } else if (strcmp(*argv, "gre") == 0 || |
83 | strcmp(*argv, "gre/ip") == 0) { | |
2520598a | 84 | set_tunnel_proto(p, IPPROTO_GRE); |
aba5acdf SH |
85 | } else if (strcmp(*argv, "sit") == 0 || |
86 | strcmp(*argv, "ipv6/ip") == 0) { | |
2520598a | 87 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 88 | } else if (strcmp(*argv, "isatap") == 0) { |
2520598a | 89 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 90 | isatap++; |
eec47608 | 91 | } else if (strcmp(*argv, "vti") == 0) { |
2520598a | 92 | set_tunnel_proto(p, IPPROTO_IPIP); |
eec47608 | 93 | p->i_flags |= VTI_ISVTI; |
aba5acdf | 94 | } else { |
a96a5d94 SH |
95 | fprintf(stderr, |
96 | "Unknown tunnel mode \"%s\"\n", *argv); | |
aba5acdf SH |
97 | exit(-1); |
98 | } | |
99 | } else if (strcmp(*argv, "key") == 0) { | |
aba5acdf SH |
100 | NEXT_ARG(); |
101 | p->i_flags |= GRE_KEY; | |
102 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 103 | p->i_key = p->o_key = tnl_parse_key("key", *argv); |
aba5acdf | 104 | } else if (strcmp(*argv, "ikey") == 0) { |
aba5acdf SH |
105 | NEXT_ARG(); |
106 | p->i_flags |= GRE_KEY; | |
a7ed1520 | 107 | p->i_key = tnl_parse_key("ikey", *argv); |
aba5acdf | 108 | } else if (strcmp(*argv, "okey") == 0) { |
aba5acdf SH |
109 | NEXT_ARG(); |
110 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 111 | p->o_key = tnl_parse_key("okey", *argv); |
aba5acdf SH |
112 | } else if (strcmp(*argv, "seq") == 0) { |
113 | p->i_flags |= GRE_SEQ; | |
114 | p->o_flags |= GRE_SEQ; | |
115 | } else if (strcmp(*argv, "iseq") == 0) { | |
116 | p->i_flags |= GRE_SEQ; | |
117 | } else if (strcmp(*argv, "oseq") == 0) { | |
118 | p->o_flags |= GRE_SEQ; | |
119 | } else if (strcmp(*argv, "csum") == 0) { | |
120 | p->i_flags |= GRE_CSUM; | |
121 | p->o_flags |= GRE_CSUM; | |
122 | } else if (strcmp(*argv, "icsum") == 0) { | |
123 | p->i_flags |= GRE_CSUM; | |
124 | } else if (strcmp(*argv, "ocsum") == 0) { | |
125 | p->o_flags |= GRE_CSUM; | |
126 | } else if (strcmp(*argv, "nopmtudisc") == 0) { | |
127 | p->iph.frag_off = 0; | |
128 | } else if (strcmp(*argv, "pmtudisc") == 0) { | |
129 | p->iph.frag_off = htons(IP_DF); | |
130 | } else if (strcmp(*argv, "remote") == 0) { | |
131 | NEXT_ARG(); | |
132 | if (strcmp(*argv, "any")) | |
133 | p->iph.daddr = get_addr32(*argv); | |
4e4b7832 TLSC |
134 | else |
135 | p->iph.daddr = htonl(INADDR_ANY); | |
aba5acdf SH |
136 | } else if (strcmp(*argv, "local") == 0) { |
137 | NEXT_ARG(); | |
138 | if (strcmp(*argv, "any")) | |
139 | p->iph.saddr = get_addr32(*argv); | |
4e4b7832 TLSC |
140 | else |
141 | p->iph.saddr = htonl(INADDR_ANY); | |
aba5acdf SH |
142 | } else if (strcmp(*argv, "dev") == 0) { |
143 | NEXT_ARG(); | |
04ce8d3e | 144 | strncpy(medium, *argv, IFNAMSIZ - 1); |
eddde110 | 145 | } else if (strcmp(*argv, "ttl") == 0 || |
0dd4d2b3 PS |
146 | strcmp(*argv, "hoplimit") == 0 || |
147 | strcmp(*argv, "hlim") == 0) { | |
148 | __u8 uval; | |
a96a5d94 | 149 | |
aba5acdf SH |
150 | NEXT_ARG(); |
151 | if (strcmp(*argv, "inherit") != 0) { | |
0dd4d2b3 | 152 | if (get_u8(&uval, *argv, 0)) |
aba5acdf | 153 | invarg("invalid TTL\n", *argv); |
aba5acdf SH |
154 | p->iph.ttl = uval; |
155 | } | |
156 | } else if (strcmp(*argv, "tos") == 0 || | |
eddde110 | 157 | strcmp(*argv, "tclass") == 0 || |
aba5acdf | 158 | matches(*argv, "dsfield") == 0) { |
e59fd3db | 159 | char *dsfield; |
aba5acdf | 160 | __u32 uval; |
a96a5d94 | 161 | |
aba5acdf | 162 | NEXT_ARG(); |
e59fd3db DW |
163 | dsfield = *argv; |
164 | strsep(&dsfield, "/"); | |
aba5acdf | 165 | if (strcmp(*argv, "inherit") != 0) { |
e59fd3db DW |
166 | dsfield = *argv; |
167 | p->iph.tos = 0; | |
aba5acdf SH |
168 | } else |
169 | p->iph.tos = 1; | |
e59fd3db DW |
170 | if (dsfield) { |
171 | if (rtnl_dsfield_a2n(&uval, dsfield)) | |
172 | invarg("bad TOS value", *argv); | |
173 | p->iph.tos |= uval; | |
174 | } | |
aba5acdf | 175 | } else { |
a96a5d94 | 176 | if (strcmp(*argv, "name") == 0) |
aba5acdf | 177 | NEXT_ARG(); |
a96a5d94 | 178 | else if (matches(*argv, "help") == 0) |
aba5acdf | 179 | usage(); |
a96a5d94 | 180 | |
aba5acdf SH |
181 | if (p->name[0]) |
182 | duparg2("name", *argv); | |
f53ecee8 | 183 | strncpy(p->name, *argv, IFNAMSIZ - 1); |
aba5acdf SH |
184 | if (cmd == SIOCCHGTUNNEL && count == 0) { |
185 | struct ip_tunnel_parm old_p; | |
a96a5d94 | 186 | |
aba5acdf | 187 | memset(&old_p, 0, sizeof(old_p)); |
d9bd1bd9 | 188 | if (tnl_get_ioctl(*argv, &old_p)) |
aba5acdf SH |
189 | return -1; |
190 | *p = old_p; | |
191 | } | |
192 | } | |
193 | count++; | |
194 | argc--; argv++; | |
195 | } | |
196 | ||
197 | ||
198 | if (p->iph.protocol == 0) { | |
199 | if (memcmp(p->name, "gre", 3) == 0) | |
200 | p->iph.protocol = IPPROTO_GRE; | |
201 | else if (memcmp(p->name, "ipip", 4) == 0) | |
202 | p->iph.protocol = IPPROTO_IPIP; | |
203 | else if (memcmp(p->name, "sit", 3) == 0) | |
204 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
205 | else if (memcmp(p->name, "isatap", 6) == 0) { |
206 | p->iph.protocol = IPPROTO_IPV6; | |
207 | isatap++; | |
eec47608 SM |
208 | } else if (memcmp(p->name, "vti", 3) == 0) { |
209 | p->iph.protocol = IPPROTO_IPIP; | |
210 | p->i_flags |= VTI_ISVTI; | |
0bd17929 | 211 | } |
aba5acdf SH |
212 | } |
213 | ||
1c28bd59 HL |
214 | if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) { |
215 | if (!(p->i_flags & VTI_ISVTI) && | |
216 | (p->iph.protocol != IPPROTO_GRE)) { | |
14645ec2 | 217 | fprintf(stderr, "Keys are not allowed with ipip and sit tunnels\n"); |
aba5acdf SH |
218 | return -1; |
219 | } | |
220 | } | |
221 | ||
222 | if (medium[0]) { | |
4b3cb962 | 223 | p->link = ll_name_to_index(medium); |
0cb6bb51 | 224 | if (p->link == 0) { |
6ddb1e8c | 225 | fprintf(stderr, "Cannot find device \"%s\"\n", medium); |
aba5acdf | 226 | return -1; |
0cb6bb51 | 227 | } |
aba5acdf SH |
228 | } |
229 | ||
230 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
231 | p->i_key = p->iph.daddr; | |
232 | p->i_flags |= GRE_KEY; | |
233 | } | |
234 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
235 | p->o_key = p->iph.daddr; | |
236 | p->o_flags |= GRE_KEY; | |
237 | } | |
238 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 239 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
240 | return -1; |
241 | } | |
eeef12c5 | 242 | if (isatap) |
0bd17929 | 243 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 244 | |
aba5acdf SH |
245 | return 0; |
246 | } | |
247 | ||
c957821b PS |
248 | static const char *tnl_defname(const struct ip_tunnel_parm *p) |
249 | { | |
250 | switch (p->iph.protocol) { | |
251 | case IPPROTO_IPIP: | |
252 | if (p->i_flags & VTI_ISVTI) | |
253 | return "ip_vti0"; | |
254 | else | |
255 | return "tunl0"; | |
256 | case IPPROTO_GRE: | |
257 | return "gre0"; | |
258 | case IPPROTO_IPV6: | |
259 | return "sit0"; | |
260 | } | |
261 | return NULL; | |
262 | } | |
aba5acdf SH |
263 | |
264 | static int do_add(int cmd, int argc, char **argv) | |
265 | { | |
266 | struct ip_tunnel_parm p; | |
c957821b | 267 | const char *basedev; |
aba5acdf SH |
268 | |
269 | if (parse_args(argc, argv, cmd, &p) < 0) | |
270 | return -1; | |
271 | ||
272 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 273 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
274 | return -1; |
275 | } | |
276 | ||
a96a5d94 SH |
277 | basedev = tnl_defname(&p); |
278 | if (!basedev) { | |
279 | fprintf(stderr, | |
280 | "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); | |
aba5acdf SH |
281 | return -1; |
282 | } | |
c957821b PS |
283 | |
284 | return tnl_add_ioctl(cmd, basedev, p.name, &p); | |
aba5acdf SH |
285 | } |
286 | ||
d9bd1bd9 | 287 | static int do_del(int argc, char **argv) |
aba5acdf SH |
288 | { |
289 | struct ip_tunnel_parm p; | |
290 | ||
291 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
292 | return -1; | |
293 | ||
c957821b | 294 | return tnl_del_ioctl(tnl_defname(&p) ? : p.name, p.name, &p); |
aba5acdf SH |
295 | } |
296 | ||
d9bd1bd9 | 297 | static void print_tunnel(struct ip_tunnel_parm *p) |
aba5acdf | 298 | { |
b88215c4 | 299 | struct ip_tunnel_6rd ip6rd; |
aba5acdf SH |
300 | char s1[1024]; |
301 | char s2[1024]; | |
aba5acdf | 302 | |
b88215c4 | 303 | memset(&ip6rd, 0, sizeof(ip6rd)); |
aba5acdf SH |
304 | |
305 | /* Do not use format_host() for local addr, | |
306 | * symbolic name will not be useful. | |
307 | */ | |
8de592d0 | 308 | printf("%s: %s/ip remote %s local %s", |
aba5acdf | 309 | p->name, |
d9bd1bd9 | 310 | tnl_strproto(p->iph.protocol), |
a418e451 | 311 | p->iph.daddr ? format_host_r(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any", |
26dcdf3a | 312 | p->iph.saddr ? rt_addr_n2a(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any"); |
aba5acdf | 313 | |
86c00faa | 314 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
a07e9912 SH |
315 | struct ip_tunnel_prl prl[16]; |
316 | int i; | |
0612519e | 317 | |
a07e9912 SH |
318 | memset(prl, 0, sizeof(prl)); |
319 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); | |
320 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 321 | |
a07e9912 | 322 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) |
a96a5d94 SH |
323 | for (i = 1; i < ARRAY_SIZE(prl); i++) { |
324 | if (prl[i].addr != htonl(INADDR_ANY)) { | |
325 | printf(" %s %s ", | |
326 | (prl[i].flags & PRL_DEFAULT) ? "pdr" : "pr", | |
a418e451 | 327 | format_host(AF_INET, 4, &prl[i].addr)); |
a96a5d94 | 328 | } |
a07e9912 | 329 | } |
a07e9912 SH |
330 | } |
331 | ||
aba5acdf | 332 | if (p->link) { |
ea71beac | 333 | const char *n = ll_index_to_name(p->link); |
a96a5d94 | 334 | |
aba5acdf | 335 | if (n) |
8de592d0 | 336 | printf(" dev %s", n); |
aba5acdf SH |
337 | } |
338 | ||
339 | if (p->iph.ttl) | |
8de592d0 | 340 | printf(" ttl %d", p->iph.ttl); |
aba5acdf | 341 | else |
8de592d0 | 342 | printf(" ttl inherit"); |
ae665a52 | 343 | |
aba5acdf SH |
344 | if (p->iph.tos) { |
345 | SPRINT_BUF(b1); | |
346 | printf(" tos"); | |
04ce8d3e | 347 | if (p->iph.tos & 1) |
aba5acdf | 348 | printf(" inherit"); |
04ce8d3e PS |
349 | if (p->iph.tos & ~1) |
350 | printf("%c%s ", p->iph.tos & 1 ? '/' : ' ', | |
351 | rtnl_dsfield_n2a(p->iph.tos & ~1, b1, sizeof(b1))); | |
aba5acdf SH |
352 | } |
353 | ||
04ce8d3e | 354 | if (!(p->iph.frag_off & htons(IP_DF))) |
aba5acdf SH |
355 | printf(" nopmtudisc"); |
356 | ||
3979ef91 | 357 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
8de592d0 | 358 | printf(" 6rd-prefix %s/%u", |
b88215c4 AC |
359 | inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), |
360 | ip6rd.prefixlen); | |
361 | if (ip6rd.relay_prefix) { | |
8de592d0 | 362 | printf(" 6rd-relay_prefix %s/%u", |
a418e451 | 363 | format_host(AF_INET, 4, &ip6rd.relay_prefix), |
b88215c4 AC |
364 | ip6rd.relay_prefixlen); |
365 | } | |
366 | } | |
367 | ||
04ce8d3e | 368 | if ((p->i_flags & GRE_KEY) && (p->o_flags & GRE_KEY) && p->o_key == p->i_key) |
6f4f7c46 | 369 | printf(" key %u", ntohl(p->i_key)); |
04ce8d3e PS |
370 | else if ((p->i_flags | p->o_flags) & GRE_KEY) { |
371 | if (p->i_flags & GRE_KEY) | |
8de592d0 | 372 | printf(" ikey %u", ntohl(p->i_key)); |
04ce8d3e | 373 | if (p->o_flags & GRE_KEY) |
8de592d0 | 374 | printf(" okey %u", ntohl(p->o_key)); |
aba5acdf SH |
375 | } |
376 | ||
04ce8d3e | 377 | if (p->i_flags & GRE_SEQ) |
4cb8d030 | 378 | printf("%s Drop packets out of sequence.", _SL_); |
04ce8d3e | 379 | if (p->i_flags & GRE_CSUM) |
aba5acdf | 380 | printf("%s Checksum in received packet is required.", _SL_); |
04ce8d3e | 381 | if (p->o_flags & GRE_SEQ) |
aba5acdf | 382 | printf("%s Sequence packets on output.", _SL_); |
04ce8d3e | 383 | if (p->o_flags & GRE_CSUM) |
aba5acdf SH |
384 | printf("%s Checksum output packets.", _SL_); |
385 | } | |
386 | ||
387 | static int do_tunnels_list(struct ip_tunnel_parm *p) | |
388 | { | |
aba5acdf | 389 | char buf[512]; |
c4527d7b | 390 | int err = -1; |
aba5acdf | 391 | FILE *fp = fopen("/proc/net/dev", "r"); |
a96a5d94 | 392 | |
aba5acdf SH |
393 | if (fp == NULL) { |
394 | perror("fopen"); | |
395 | return -1; | |
396 | } | |
397 | ||
38c867d2 SH |
398 | /* skip header lines */ |
399 | if (!fgets(buf, sizeof(buf), fp) || | |
400 | !fgets(buf, sizeof(buf), fp)) { | |
401 | fprintf(stderr, "/proc/net/dev read error\n"); | |
c4527d7b | 402 | goto end; |
38c867d2 | 403 | } |
aba5acdf SH |
404 | |
405 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
c4527d7b | 406 | char name[IFNAMSIZ]; |
ea71beac | 407 | int index, type; |
c4527d7b | 408 | struct ip_tunnel_parm p1; |
aba5acdf | 409 | char *ptr; |
c4527d7b | 410 | |
aba5acdf | 411 | buf[sizeof(buf) - 1] = 0; |
a96a5d94 SH |
412 | ptr = strchr(buf, ':'); |
413 | if (ptr == NULL || | |
aba5acdf | 414 | (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { |
14645ec2 | 415 | fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n"); |
c4527d7b | 416 | goto end; |
aba5acdf | 417 | } |
aba5acdf SH |
418 | if (p->name[0] && strcmp(p->name, name)) |
419 | continue; | |
ea71beac SH |
420 | index = ll_name_to_index(name); |
421 | if (index == 0) | |
422 | continue; | |
423 | type = ll_index_to_type(index); | |
aba5acdf | 424 | if (type == -1) { |
14645ec2 | 425 | fprintf(stderr, "Failed to get type of \"%s\"\n", name); |
aba5acdf SH |
426 | continue; |
427 | } | |
428 | if (type != ARPHRD_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT) | |
429 | continue; | |
430 | memset(&p1, 0, sizeof(p1)); | |
d9bd1bd9 | 431 | if (tnl_get_ioctl(name, &p1)) |
aba5acdf SH |
432 | continue; |
433 | if ((p->link && p1.link != p->link) || | |
434 | (p->name[0] && strcmp(p1.name, p->name)) || | |
435 | (p->iph.daddr && p1.iph.daddr != p->iph.daddr) || | |
436 | (p->iph.saddr && p1.iph.saddr != p->iph.saddr) || | |
437 | (p->i_key && p1.i_key != p->i_key)) | |
438 | continue; | |
439 | print_tunnel(&p1); | |
7d6aadcd PS |
440 | if (show_stats) |
441 | tnl_print_stats(ptr); | |
aba5acdf SH |
442 | printf("\n"); |
443 | } | |
c4527d7b PS |
444 | err = 0; |
445 | end: | |
297452a1 | 446 | fclose(fp); |
c4527d7b | 447 | return err; |
aba5acdf SH |
448 | } |
449 | ||
450 | static int do_show(int argc, char **argv) | |
451 | { | |
aba5acdf | 452 | struct ip_tunnel_parm p; |
c957821b | 453 | const char *basedev; |
aba5acdf | 454 | |
ea71beac | 455 | ll_init_map(&rth); |
aba5acdf SH |
456 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) |
457 | return -1; | |
458 | ||
a96a5d94 SH |
459 | basedev = tnl_defname(&p); |
460 | if (!basedev) | |
c957821b PS |
461 | return do_tunnels_list(&p); |
462 | ||
463 | if (tnl_get_ioctl(p.name[0] ? p.name : basedev, &p)) | |
aba5acdf SH |
464 | return -1; |
465 | ||
466 | print_tunnel(&p); | |
467 | printf("\n"); | |
468 | return 0; | |
469 | } | |
470 | ||
a07e9912 SH |
471 | static int do_prl(int argc, char **argv) |
472 | { | |
473 | struct ip_tunnel_prl p; | |
474 | int count = 0; | |
475 | int devname = 0; | |
476 | int cmd = 0; | |
477 | char medium[IFNAMSIZ]; | |
478 | ||
479 | memset(&p, 0, sizeof(p)); | |
480 | memset(&medium, 0, sizeof(medium)); | |
481 | ||
482 | while (argc > 0) { | |
483 | if (strcmp(*argv, "prl-default") == 0) { | |
484 | NEXT_ARG(); | |
485 | cmd = SIOCADDPRL; | |
486 | p.addr = get_addr32(*argv); | |
487 | p.flags |= PRL_DEFAULT; | |
488 | count++; | |
489 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
490 | NEXT_ARG(); | |
491 | cmd = SIOCADDPRL; | |
492 | p.addr = get_addr32(*argv); | |
493 | count++; | |
494 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
495 | NEXT_ARG(); | |
496 | cmd = SIOCDELPRL; | |
497 | p.addr = get_addr32(*argv); | |
498 | count++; | |
499 | } else if (strcmp(*argv, "dev") == 0) { | |
500 | NEXT_ARG(); | |
501 | strncpy(medium, *argv, IFNAMSIZ-1); | |
502 | devname++; | |
503 | } else { | |
a96a5d94 SH |
504 | fprintf(stderr, |
505 | "Invalid PRL parameter \"%s\"\n", *argv); | |
a07e9912 SH |
506 | exit(-1); |
507 | } | |
508 | if (count > 1) { | |
a96a5d94 SH |
509 | fprintf(stderr, |
510 | "One PRL entry at a time\n"); | |
a07e9912 SH |
511 | exit(-1); |
512 | } | |
513 | argc--; argv++; | |
514 | } | |
515 | if (devname == 0) { | |
14645ec2 | 516 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
517 | exit(-1); |
518 | } | |
519 | ||
520 | return tnl_prl_ioctl(cmd, medium, &p); | |
521 | } | |
522 | ||
b88215c4 AC |
523 | static int do_6rd(int argc, char **argv) |
524 | { | |
525 | struct ip_tunnel_6rd ip6rd; | |
526 | int devname = 0; | |
527 | int cmd = 0; | |
528 | char medium[IFNAMSIZ]; | |
529 | inet_prefix prefix; | |
530 | ||
531 | memset(&ip6rd, 0, sizeof(ip6rd)); | |
532 | memset(&medium, 0, sizeof(medium)); | |
533 | ||
534 | while (argc > 0) { | |
535 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
536 | NEXT_ARG(); | |
537 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
538 | invarg("invalid 6rd_prefix\n", *argv); | |
539 | cmd = SIOCADD6RD; | |
540 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
541 | ip6rd.prefixlen = prefix.bitlen; | |
542 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
543 | NEXT_ARG(); | |
544 | if (get_prefix(&prefix, *argv, AF_INET)) | |
545 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
546 | cmd = SIOCADD6RD; | |
547 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
548 | ip6rd.relay_prefixlen = prefix.bitlen; | |
549 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
550 | cmd = SIOCDEL6RD; | |
551 | } else if (strcmp(*argv, "dev") == 0) { | |
552 | NEXT_ARG(); | |
553 | strncpy(medium, *argv, IFNAMSIZ-1); | |
554 | devname++; | |
555 | } else { | |
a96a5d94 SH |
556 | fprintf(stderr, |
557 | "Invalid 6RD parameter \"%s\"\n", *argv); | |
b88215c4 AC |
558 | exit(-1); |
559 | } | |
560 | argc--; argv++; | |
561 | } | |
562 | if (devname == 0) { | |
14645ec2 | 563 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
564 | exit(-1); |
565 | } | |
566 | ||
567 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
568 | } | |
569 | ||
a96a5d94 SH |
570 | static int tunnel_mode_is_ipv6(char *tunnel_mode) |
571 | { | |
572 | static const char * const ipv6_modes[] = { | |
cc9c1dfa KS |
573 | "ipv6/ipv6", "ip6ip6", |
574 | "vti6", | |
575 | "ip/ipv6", "ipv4/ipv6", "ipip6", "ip4ip6", | |
576 | "ip6gre", "gre/ipv6", | |
577 | "any/ipv6", "any" | |
578 | }; | |
579 | int i; | |
580 | ||
a96a5d94 | 581 | for (i = 0; i < ARRAY_SIZE(ipv6_modes); i++) { |
cc9c1dfa KS |
582 | if (strcmp(ipv6_modes[i], tunnel_mode) == 0) |
583 | return 1; | |
584 | } | |
585 | return 0; | |
586 | } | |
587 | ||
aba5acdf SH |
588 | int do_iptunnel(int argc, char **argv) |
589 | { | |
cc9c1dfa KS |
590 | int i; |
591 | ||
592 | for (i = 0; i < argc - 1; i++) { | |
593 | if (strcmp(argv[i], "mode") == 0) { | |
594 | if (tunnel_mode_is_ipv6(argv[i + 1])) | |
595 | preferred_family = AF_INET6; | |
596 | break; | |
597 | } | |
598 | } | |
d9bd1bd9 MN |
599 | switch (preferred_family) { |
600 | case AF_UNSPEC: | |
601 | preferred_family = AF_INET; | |
602 | break; | |
603 | case AF_INET: | |
604 | break; | |
288384f2 MN |
605 | /* |
606 | * This is silly enough but we have no easy way to make it | |
607 | * protocol-independent because of unarranged structure between | |
608 | * IPv4 and IPv6. | |
609 | */ | |
610 | case AF_INET6: | |
611 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 612 | default: |
14645ec2 | 613 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
614 | exit(-1); |
615 | } | |
616 | ||
aba5acdf SH |
617 | if (argc > 0) { |
618 | if (matches(*argv, "add") == 0) | |
04ce8d3e | 619 | return do_add(SIOCADDTUNNEL, argc - 1, argv + 1); |
aba5acdf | 620 | if (matches(*argv, "change") == 0) |
04ce8d3e | 621 | return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1); |
6e30461e | 622 | if (matches(*argv, "delete") == 0) |
04ce8d3e | 623 | return do_del(argc - 1, argv + 1); |
aba5acdf SH |
624 | if (matches(*argv, "show") == 0 || |
625 | matches(*argv, "lst") == 0 || | |
626 | matches(*argv, "list") == 0) | |
04ce8d3e | 627 | return do_show(argc - 1, argv + 1); |
a07e9912 | 628 | if (matches(*argv, "prl") == 0) |
04ce8d3e | 629 | return do_prl(argc - 1, argv + 1); |
b88215c4 | 630 | if (matches(*argv, "6rd") == 0) |
04ce8d3e | 631 | return do_6rd(argc - 1, argv + 1); |
aba5acdf SH |
632 | if (matches(*argv, "help") == 0) |
633 | usage(); | |
634 | } else | |
635 | return do_show(0, NULL); | |
636 | ||
14645ec2 | 637 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
638 | exit(-1); |
639 | } |