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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); |
fe99adbc SP |
216 | if (!p->link) |
217 | return nodev(medium); | |
aba5acdf SH |
218 | } |
219 | ||
220 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
221 | p->i_key = p->iph.daddr; | |
222 | p->i_flags |= GRE_KEY; | |
223 | } | |
224 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
225 | p->o_key = p->iph.daddr; | |
226 | p->o_flags |= GRE_KEY; | |
227 | } | |
228 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 229 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
230 | return -1; |
231 | } | |
eeef12c5 | 232 | if (isatap) |
0bd17929 | 233 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 234 | |
aba5acdf SH |
235 | return 0; |
236 | } | |
237 | ||
c957821b PS |
238 | static const char *tnl_defname(const struct ip_tunnel_parm *p) |
239 | { | |
240 | switch (p->iph.protocol) { | |
241 | case IPPROTO_IPIP: | |
242 | if (p->i_flags & VTI_ISVTI) | |
243 | return "ip_vti0"; | |
244 | else | |
245 | return "tunl0"; | |
246 | case IPPROTO_GRE: | |
247 | return "gre0"; | |
248 | case IPPROTO_IPV6: | |
249 | return "sit0"; | |
250 | } | |
251 | return NULL; | |
252 | } | |
aba5acdf SH |
253 | |
254 | static int do_add(int cmd, int argc, char **argv) | |
255 | { | |
256 | struct ip_tunnel_parm p; | |
c957821b | 257 | const char *basedev; |
aba5acdf SH |
258 | |
259 | if (parse_args(argc, argv, cmd, &p) < 0) | |
260 | return -1; | |
261 | ||
262 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 263 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
264 | return -1; |
265 | } | |
266 | ||
a96a5d94 SH |
267 | basedev = tnl_defname(&p); |
268 | if (!basedev) { | |
269 | fprintf(stderr, | |
270 | "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); | |
aba5acdf SH |
271 | return -1; |
272 | } | |
c957821b PS |
273 | |
274 | return tnl_add_ioctl(cmd, basedev, p.name, &p); | |
aba5acdf SH |
275 | } |
276 | ||
d9bd1bd9 | 277 | static int do_del(int argc, char **argv) |
aba5acdf SH |
278 | { |
279 | struct ip_tunnel_parm p; | |
280 | ||
281 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
282 | return -1; | |
283 | ||
c957821b | 284 | return tnl_del_ioctl(tnl_defname(&p) ? : p.name, p.name, &p); |
aba5acdf SH |
285 | } |
286 | ||
3e953938 | 287 | static void print_tunnel(const void *t) |
aba5acdf | 288 | { |
3e953938 | 289 | const struct ip_tunnel_parm *p = t; |
d17b136f | 290 | struct ip_tunnel_6rd ip6rd = {}; |
aba5acdf SH |
291 | char s1[1024]; |
292 | char s2[1024]; | |
aba5acdf | 293 | |
aba5acdf SH |
294 | /* Do not use format_host() for local addr, |
295 | * symbolic name will not be useful. | |
296 | */ | |
8de592d0 | 297 | printf("%s: %s/ip remote %s local %s", |
aba5acdf | 298 | p->name, |
d9bd1bd9 | 299 | tnl_strproto(p->iph.protocol), |
a418e451 | 300 | p->iph.daddr ? format_host_r(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any", |
2e96d2cc | 301 | p->iph.saddr ? rt_addr_n2a_r(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any"); |
aba5acdf | 302 | |
86c00faa | 303 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
d17b136f | 304 | struct ip_tunnel_prl prl[16] = {}; |
a07e9912 | 305 | int i; |
0612519e | 306 | |
a07e9912 SH |
307 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); |
308 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 309 | |
a07e9912 | 310 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) |
a96a5d94 SH |
311 | for (i = 1; i < ARRAY_SIZE(prl); i++) { |
312 | if (prl[i].addr != htonl(INADDR_ANY)) { | |
313 | printf(" %s %s ", | |
314 | (prl[i].flags & PRL_DEFAULT) ? "pdr" : "pr", | |
a418e451 | 315 | format_host(AF_INET, 4, &prl[i].addr)); |
a96a5d94 | 316 | } |
a07e9912 | 317 | } |
a07e9912 SH |
318 | } |
319 | ||
aba5acdf | 320 | if (p->link) { |
ea71beac | 321 | const char *n = ll_index_to_name(p->link); |
a96a5d94 | 322 | |
aba5acdf | 323 | if (n) |
8de592d0 | 324 | printf(" dev %s", n); |
aba5acdf SH |
325 | } |
326 | ||
327 | if (p->iph.ttl) | |
375560c4 | 328 | printf(" ttl %u", p->iph.ttl); |
aba5acdf | 329 | else |
8de592d0 | 330 | printf(" ttl inherit"); |
ae665a52 | 331 | |
aba5acdf SH |
332 | if (p->iph.tos) { |
333 | SPRINT_BUF(b1); | |
334 | printf(" tos"); | |
04ce8d3e | 335 | if (p->iph.tos & 1) |
aba5acdf | 336 | printf(" inherit"); |
04ce8d3e PS |
337 | if (p->iph.tos & ~1) |
338 | printf("%c%s ", p->iph.tos & 1 ? '/' : ' ', | |
339 | rtnl_dsfield_n2a(p->iph.tos & ~1, b1, sizeof(b1))); | |
aba5acdf SH |
340 | } |
341 | ||
04ce8d3e | 342 | if (!(p->iph.frag_off & htons(IP_DF))) |
aba5acdf SH |
343 | printf(" nopmtudisc"); |
344 | ||
3979ef91 | 345 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
8de592d0 | 346 | printf(" 6rd-prefix %s/%u", |
b88215c4 AC |
347 | inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), |
348 | ip6rd.prefixlen); | |
349 | if (ip6rd.relay_prefix) { | |
8de592d0 | 350 | printf(" 6rd-relay_prefix %s/%u", |
a418e451 | 351 | format_host(AF_INET, 4, &ip6rd.relay_prefix), |
b88215c4 AC |
352 | ip6rd.relay_prefixlen); |
353 | } | |
354 | } | |
355 | ||
04ce8d3e | 356 | if ((p->i_flags & GRE_KEY) && (p->o_flags & GRE_KEY) && p->o_key == p->i_key) |
6f4f7c46 | 357 | printf(" key %u", ntohl(p->i_key)); |
04ce8d3e PS |
358 | else if ((p->i_flags | p->o_flags) & GRE_KEY) { |
359 | if (p->i_flags & GRE_KEY) | |
8de592d0 | 360 | printf(" ikey %u", ntohl(p->i_key)); |
04ce8d3e | 361 | if (p->o_flags & GRE_KEY) |
8de592d0 | 362 | printf(" okey %u", ntohl(p->o_key)); |
aba5acdf SH |
363 | } |
364 | ||
04ce8d3e | 365 | if (p->i_flags & GRE_SEQ) |
4cb8d030 | 366 | printf("%s Drop packets out of sequence.", _SL_); |
04ce8d3e | 367 | if (p->i_flags & GRE_CSUM) |
aba5acdf | 368 | printf("%s Checksum in received packet is required.", _SL_); |
04ce8d3e | 369 | if (p->o_flags & GRE_SEQ) |
aba5acdf | 370 | printf("%s Sequence packets on output.", _SL_); |
04ce8d3e | 371 | if (p->o_flags & GRE_CSUM) |
aba5acdf SH |
372 | printf("%s Checksum output packets.", _SL_); |
373 | } | |
374 | ||
3e953938 SP |
375 | |
376 | static void ip_tunnel_parm_initialize(const struct tnl_print_nlmsg_info *info) | |
377 | { | |
378 | struct ip_tunnel_parm *p2 = info->p2; | |
379 | ||
380 | memset(p2, 0, sizeof(*p2)); | |
381 | } | |
382 | ||
383 | static bool ip_tunnel_parm_match(const struct tnl_print_nlmsg_info *info) | |
ec895940 | 384 | { |
3e953938 SP |
385 | const struct ip_tunnel_parm *p1 = info->p1; |
386 | const struct ip_tunnel_parm *p2 = info->p2; | |
387 | ||
ec895940 SP |
388 | return ((!p1->link || p1->link == p2->link) && |
389 | (!p1->name[0] || strcmp(p1->name, p2->name) == 0) && | |
390 | (!p1->iph.daddr || p1->iph.daddr == p2->iph.daddr) && | |
391 | (!p1->iph.saddr || p1->iph.saddr == p2->iph.saddr) && | |
392 | (!p1->i_key || p1->i_key == p2->i_key)); | |
393 | } | |
394 | ||
aba5acdf SH |
395 | static int do_show(int argc, char **argv) |
396 | { | |
3e953938 | 397 | struct ip_tunnel_parm p, p1; |
c957821b | 398 | const char *basedev; |
aba5acdf SH |
399 | |
400 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) | |
401 | return -1; | |
402 | ||
a96a5d94 | 403 | basedev = tnl_defname(&p); |
3e953938 SP |
404 | if (!basedev) { |
405 | struct tnl_print_nlmsg_info info = { | |
406 | .p1 = &p, | |
407 | .p2 = &p1, | |
408 | .init = ip_tunnel_parm_initialize, | |
409 | .match = ip_tunnel_parm_match, | |
410 | .print = print_tunnel, | |
411 | }; | |
412 | ||
413 | return do_tunnels_list(&info); | |
414 | } | |
c957821b PS |
415 | |
416 | if (tnl_get_ioctl(p.name[0] ? p.name : basedev, &p)) | |
aba5acdf SH |
417 | return -1; |
418 | ||
419 | print_tunnel(&p); | |
ec895940 | 420 | fputc('\n', stdout); |
aba5acdf SH |
421 | return 0; |
422 | } | |
423 | ||
a07e9912 SH |
424 | static int do_prl(int argc, char **argv) |
425 | { | |
d17b136f | 426 | struct ip_tunnel_prl p = {}; |
a07e9912 | 427 | int count = 0; |
a07e9912 | 428 | int cmd = 0; |
26111ab1 | 429 | const char *medium = NULL; |
a07e9912 SH |
430 | |
431 | while (argc > 0) { | |
432 | if (strcmp(*argv, "prl-default") == 0) { | |
433 | NEXT_ARG(); | |
434 | cmd = SIOCADDPRL; | |
435 | p.addr = get_addr32(*argv); | |
436 | p.flags |= PRL_DEFAULT; | |
437 | count++; | |
438 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
439 | NEXT_ARG(); | |
440 | cmd = SIOCADDPRL; | |
441 | p.addr = get_addr32(*argv); | |
442 | count++; | |
443 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
444 | NEXT_ARG(); | |
445 | cmd = SIOCDELPRL; | |
446 | p.addr = get_addr32(*argv); | |
447 | count++; | |
448 | } else if (strcmp(*argv, "dev") == 0) { | |
449 | NEXT_ARG(); | |
625df645 PS |
450 | if (check_ifname(*argv)) |
451 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 452 | medium = *argv; |
a07e9912 | 453 | } else { |
a96a5d94 SH |
454 | fprintf(stderr, |
455 | "Invalid PRL parameter \"%s\"\n", *argv); | |
a07e9912 SH |
456 | exit(-1); |
457 | } | |
458 | if (count > 1) { | |
a96a5d94 SH |
459 | fprintf(stderr, |
460 | "One PRL entry at a time\n"); | |
a07e9912 SH |
461 | exit(-1); |
462 | } | |
463 | argc--; argv++; | |
464 | } | |
26111ab1 | 465 | if (!medium) { |
14645ec2 | 466 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
467 | exit(-1); |
468 | } | |
469 | ||
470 | return tnl_prl_ioctl(cmd, medium, &p); | |
471 | } | |
472 | ||
b88215c4 AC |
473 | static int do_6rd(int argc, char **argv) |
474 | { | |
d17b136f | 475 | struct ip_tunnel_6rd ip6rd = {}; |
b88215c4 | 476 | int cmd = 0; |
26111ab1 | 477 | const char *medium = NULL; |
b88215c4 AC |
478 | inet_prefix prefix; |
479 | ||
b88215c4 AC |
480 | while (argc > 0) { |
481 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
482 | NEXT_ARG(); | |
483 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
484 | invarg("invalid 6rd_prefix\n", *argv); | |
485 | cmd = SIOCADD6RD; | |
486 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
487 | ip6rd.prefixlen = prefix.bitlen; | |
488 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
489 | NEXT_ARG(); | |
490 | if (get_prefix(&prefix, *argv, AF_INET)) | |
491 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
492 | cmd = SIOCADD6RD; | |
493 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
494 | ip6rd.relay_prefixlen = prefix.bitlen; | |
495 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
496 | cmd = SIOCDEL6RD; | |
497 | } else if (strcmp(*argv, "dev") == 0) { | |
498 | NEXT_ARG(); | |
625df645 PS |
499 | if (check_ifname(*argv)) |
500 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 501 | medium = *argv; |
b88215c4 | 502 | } else { |
a96a5d94 SH |
503 | fprintf(stderr, |
504 | "Invalid 6RD parameter \"%s\"\n", *argv); | |
b88215c4 AC |
505 | exit(-1); |
506 | } | |
507 | argc--; argv++; | |
508 | } | |
26111ab1 | 509 | if (!medium) { |
14645ec2 | 510 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
511 | exit(-1); |
512 | } | |
513 | ||
514 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
515 | } | |
516 | ||
a96a5d94 SH |
517 | static int tunnel_mode_is_ipv6(char *tunnel_mode) |
518 | { | |
519 | static const char * const ipv6_modes[] = { | |
cc9c1dfa KS |
520 | "ipv6/ipv6", "ip6ip6", |
521 | "vti6", | |
522 | "ip/ipv6", "ipv4/ipv6", "ipip6", "ip4ip6", | |
523 | "ip6gre", "gre/ipv6", | |
524 | "any/ipv6", "any" | |
525 | }; | |
526 | int i; | |
527 | ||
a96a5d94 | 528 | for (i = 0; i < ARRAY_SIZE(ipv6_modes); i++) { |
cc9c1dfa KS |
529 | if (strcmp(ipv6_modes[i], tunnel_mode) == 0) |
530 | return 1; | |
531 | } | |
532 | return 0; | |
533 | } | |
534 | ||
aba5acdf SH |
535 | int do_iptunnel(int argc, char **argv) |
536 | { | |
cc9c1dfa KS |
537 | int i; |
538 | ||
539 | for (i = 0; i < argc - 1; i++) { | |
540 | if (strcmp(argv[i], "mode") == 0) { | |
541 | if (tunnel_mode_is_ipv6(argv[i + 1])) | |
542 | preferred_family = AF_INET6; | |
543 | break; | |
544 | } | |
545 | } | |
d9bd1bd9 MN |
546 | switch (preferred_family) { |
547 | case AF_UNSPEC: | |
548 | preferred_family = AF_INET; | |
549 | break; | |
550 | case AF_INET: | |
551 | break; | |
288384f2 MN |
552 | /* |
553 | * This is silly enough but we have no easy way to make it | |
554 | * protocol-independent because of unarranged structure between | |
555 | * IPv4 and IPv6. | |
556 | */ | |
557 | case AF_INET6: | |
558 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 559 | default: |
14645ec2 | 560 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
561 | exit(-1); |
562 | } | |
563 | ||
aba5acdf SH |
564 | if (argc > 0) { |
565 | if (matches(*argv, "add") == 0) | |
04ce8d3e | 566 | return do_add(SIOCADDTUNNEL, argc - 1, argv + 1); |
aba5acdf | 567 | if (matches(*argv, "change") == 0) |
04ce8d3e | 568 | return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1); |
6e30461e | 569 | if (matches(*argv, "delete") == 0) |
04ce8d3e | 570 | return do_del(argc - 1, argv + 1); |
aba5acdf SH |
571 | if (matches(*argv, "show") == 0 || |
572 | matches(*argv, "lst") == 0 || | |
573 | matches(*argv, "list") == 0) | |
04ce8d3e | 574 | return do_show(argc - 1, argv + 1); |
a07e9912 | 575 | if (matches(*argv, "prl") == 0) |
04ce8d3e | 576 | return do_prl(argc - 1, argv + 1); |
b88215c4 | 577 | if (matches(*argv, "6rd") == 0) |
04ce8d3e | 578 | return do_6rd(argc - 1, argv + 1); |
aba5acdf SH |
579 | if (matches(*argv, "help") == 0) |
580 | usage(); | |
581 | } else | |
582 | return do_show(0, NULL); | |
583 | ||
14645ec2 | 584 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
585 | exit(-1); |
586 | } |