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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 | { | |
8589eb4e MC |
35 | fprintf(stderr, |
36 | "Usage: ip tunnel { add | change | del | show | prl | 6rd } [ NAME ]\n" | |
37 | " [ mode { ipip | gre | sit | isatap | vti } ] [ remote ADDR ] [ local ADDR ]\n" | |
38 | " [ [i|o]seq ] [ [i|o]key KEY ] [ [i|o]csum ]\n" | |
39 | " [ prl-default ADDR ] [ prl-nodefault ADDR ] [ prl-delete ADDR ]\n" | |
40 | " [ 6rd-prefix ADDR ] [ 6rd-relay_prefix ADDR ] [ 6rd-reset ]\n" | |
41 | " [ ttl TTL ] [ tos TOS ] [ [no]pmtudisc ] [ dev PHYS_DEV ]\n" | |
42 | "\n" | |
43 | "Where: NAME := STRING\n" | |
44 | " ADDR := { IP_ADDRESS | any }\n" | |
45 | " TOS := { STRING | 00..ff | inherit | inherit/STRING | inherit/00..ff }\n" | |
46 | " TTL := { 1..255 | inherit }\n" | |
47 | " KEY := { DOTTED_QUAD | NUMBER }\n"); | |
aba5acdf SH |
48 | exit(-1); |
49 | } | |
50 | ||
2520598a PS |
51 | static void set_tunnel_proto(struct ip_tunnel_parm *p, int proto) |
52 | { | |
53 | if (p->iph.protocol && p->iph.protocol != proto) { | |
a96a5d94 SH |
54 | fprintf(stderr, |
55 | "You managed to ask for more than one tunnel mode.\n"); | |
2520598a PS |
56 | exit(-1); |
57 | } | |
58 | p->iph.protocol = proto; | |
59 | } | |
60 | ||
aba5acdf SH |
61 | static int parse_args(int argc, char **argv, int cmd, struct ip_tunnel_parm *p) |
62 | { | |
63 | int count = 0; | |
26111ab1 | 64 | const char *medium = NULL; |
0bd17929 | 65 | int isatap = 0; |
aba5acdf SH |
66 | |
67 | memset(p, 0, sizeof(*p)); | |
aba5acdf SH |
68 | p->iph.version = 4; |
69 | p->iph.ihl = 5; | |
70 | #ifndef IP_DF | |
71 | #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ | |
72 | #endif | |
73 | p->iph.frag_off = htons(IP_DF); | |
74 | ||
75 | while (argc > 0) { | |
76 | if (strcmp(*argv, "mode") == 0) { | |
77 | NEXT_ARG(); | |
78 | if (strcmp(*argv, "ipip") == 0 || | |
79 | strcmp(*argv, "ip/ip") == 0) { | |
2520598a | 80 | set_tunnel_proto(p, IPPROTO_IPIP); |
aba5acdf SH |
81 | } else if (strcmp(*argv, "gre") == 0 || |
82 | strcmp(*argv, "gre/ip") == 0) { | |
2520598a | 83 | set_tunnel_proto(p, IPPROTO_GRE); |
aba5acdf SH |
84 | } else if (strcmp(*argv, "sit") == 0 || |
85 | strcmp(*argv, "ipv6/ip") == 0) { | |
2520598a | 86 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 87 | } else if (strcmp(*argv, "isatap") == 0) { |
2520598a | 88 | set_tunnel_proto(p, IPPROTO_IPV6); |
0bd17929 | 89 | isatap++; |
eec47608 | 90 | } else if (strcmp(*argv, "vti") == 0) { |
2520598a | 91 | set_tunnel_proto(p, IPPROTO_IPIP); |
eec47608 | 92 | p->i_flags |= VTI_ISVTI; |
aba5acdf | 93 | } else { |
a96a5d94 SH |
94 | fprintf(stderr, |
95 | "Unknown tunnel mode \"%s\"\n", *argv); | |
aba5acdf SH |
96 | exit(-1); |
97 | } | |
98 | } else if (strcmp(*argv, "key") == 0) { | |
aba5acdf SH |
99 | NEXT_ARG(); |
100 | p->i_flags |= GRE_KEY; | |
101 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 102 | p->i_key = p->o_key = tnl_parse_key("key", *argv); |
aba5acdf | 103 | } else if (strcmp(*argv, "ikey") == 0) { |
aba5acdf SH |
104 | NEXT_ARG(); |
105 | p->i_flags |= GRE_KEY; | |
a7ed1520 | 106 | p->i_key = tnl_parse_key("ikey", *argv); |
aba5acdf | 107 | } else if (strcmp(*argv, "okey") == 0) { |
aba5acdf SH |
108 | NEXT_ARG(); |
109 | p->o_flags |= GRE_KEY; | |
a7ed1520 | 110 | p->o_key = tnl_parse_key("okey", *argv); |
aba5acdf SH |
111 | } else if (strcmp(*argv, "seq") == 0) { |
112 | p->i_flags |= GRE_SEQ; | |
113 | p->o_flags |= GRE_SEQ; | |
114 | } else if (strcmp(*argv, "iseq") == 0) { | |
115 | p->i_flags |= GRE_SEQ; | |
116 | } else if (strcmp(*argv, "oseq") == 0) { | |
117 | p->o_flags |= GRE_SEQ; | |
118 | } else if (strcmp(*argv, "csum") == 0) { | |
119 | p->i_flags |= GRE_CSUM; | |
120 | p->o_flags |= GRE_CSUM; | |
121 | } else if (strcmp(*argv, "icsum") == 0) { | |
122 | p->i_flags |= GRE_CSUM; | |
123 | } else if (strcmp(*argv, "ocsum") == 0) { | |
124 | p->o_flags |= GRE_CSUM; | |
125 | } else if (strcmp(*argv, "nopmtudisc") == 0) { | |
126 | p->iph.frag_off = 0; | |
127 | } else if (strcmp(*argv, "pmtudisc") == 0) { | |
128 | p->iph.frag_off = htons(IP_DF); | |
129 | } else if (strcmp(*argv, "remote") == 0) { | |
130 | NEXT_ARG(); | |
57daab1e | 131 | p->iph.daddr = get_addr32(*argv); |
aba5acdf SH |
132 | } else if (strcmp(*argv, "local") == 0) { |
133 | NEXT_ARG(); | |
57daab1e | 134 | p->iph.saddr = get_addr32(*argv); |
aba5acdf SH |
135 | } else if (strcmp(*argv, "dev") == 0) { |
136 | NEXT_ARG(); | |
26111ab1 | 137 | medium = *argv; |
eddde110 | 138 | } else if (strcmp(*argv, "ttl") == 0 || |
0dd4d2b3 PS |
139 | strcmp(*argv, "hoplimit") == 0 || |
140 | strcmp(*argv, "hlim") == 0) { | |
141 | __u8 uval; | |
a96a5d94 | 142 | |
aba5acdf SH |
143 | NEXT_ARG(); |
144 | if (strcmp(*argv, "inherit") != 0) { | |
0dd4d2b3 | 145 | if (get_u8(&uval, *argv, 0)) |
aba5acdf | 146 | invarg("invalid TTL\n", *argv); |
aba5acdf SH |
147 | p->iph.ttl = uval; |
148 | } | |
149 | } else if (strcmp(*argv, "tos") == 0 || | |
eddde110 | 150 | strcmp(*argv, "tclass") == 0 || |
aba5acdf | 151 | matches(*argv, "dsfield") == 0) { |
e59fd3db | 152 | char *dsfield; |
aba5acdf | 153 | __u32 uval; |
a96a5d94 | 154 | |
aba5acdf | 155 | NEXT_ARG(); |
e59fd3db DW |
156 | dsfield = *argv; |
157 | strsep(&dsfield, "/"); | |
aba5acdf | 158 | if (strcmp(*argv, "inherit") != 0) { |
e59fd3db DW |
159 | dsfield = *argv; |
160 | p->iph.tos = 0; | |
aba5acdf SH |
161 | } else |
162 | p->iph.tos = 1; | |
e59fd3db DW |
163 | if (dsfield) { |
164 | if (rtnl_dsfield_a2n(&uval, dsfield)) | |
165 | invarg("bad TOS value", *argv); | |
166 | p->iph.tos |= uval; | |
167 | } | |
aba5acdf | 168 | } else { |
a96a5d94 | 169 | if (strcmp(*argv, "name") == 0) |
aba5acdf | 170 | NEXT_ARG(); |
a96a5d94 | 171 | else if (matches(*argv, "help") == 0) |
aba5acdf | 172 | usage(); |
a96a5d94 | 173 | |
aba5acdf SH |
174 | if (p->name[0]) |
175 | duparg2("name", *argv); | |
625df645 PS |
176 | if (get_ifname(p->name, *argv)) |
177 | invarg("\"name\" not a valid ifname", *argv); | |
aba5acdf | 178 | if (cmd == SIOCCHGTUNNEL && count == 0) { |
d17b136f | 179 | struct ip_tunnel_parm old_p = {}; |
a96a5d94 | 180 | |
d9bd1bd9 | 181 | if (tnl_get_ioctl(*argv, &old_p)) |
aba5acdf SH |
182 | return -1; |
183 | *p = old_p; | |
184 | } | |
185 | } | |
186 | count++; | |
187 | argc--; argv++; | |
188 | } | |
189 | ||
190 | ||
191 | if (p->iph.protocol == 0) { | |
192 | if (memcmp(p->name, "gre", 3) == 0) | |
193 | p->iph.protocol = IPPROTO_GRE; | |
194 | else if (memcmp(p->name, "ipip", 4) == 0) | |
195 | p->iph.protocol = IPPROTO_IPIP; | |
196 | else if (memcmp(p->name, "sit", 3) == 0) | |
197 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
198 | else if (memcmp(p->name, "isatap", 6) == 0) { |
199 | p->iph.protocol = IPPROTO_IPV6; | |
200 | isatap++; | |
eec47608 SM |
201 | } else if (memcmp(p->name, "vti", 3) == 0) { |
202 | p->iph.protocol = IPPROTO_IPIP; | |
203 | p->i_flags |= VTI_ISVTI; | |
0bd17929 | 204 | } |
aba5acdf SH |
205 | } |
206 | ||
1c28bd59 HL |
207 | if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) { |
208 | if (!(p->i_flags & VTI_ISVTI) && | |
209 | (p->iph.protocol != IPPROTO_GRE)) { | |
14645ec2 | 210 | fprintf(stderr, "Keys are not allowed with ipip and sit tunnels\n"); |
aba5acdf SH |
211 | return -1; |
212 | } | |
213 | } | |
214 | ||
26111ab1 | 215 | if (medium) { |
4b3cb962 | 216 | p->link = ll_name_to_index(medium); |
fe99adbc SP |
217 | if (!p->link) |
218 | return nodev(medium); | |
aba5acdf SH |
219 | } |
220 | ||
221 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
222 | p->i_key = p->iph.daddr; | |
223 | p->i_flags |= GRE_KEY; | |
224 | } | |
225 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
226 | p->o_key = p->iph.daddr; | |
227 | p->o_flags |= GRE_KEY; | |
228 | } | |
229 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 230 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
231 | return -1; |
232 | } | |
eeef12c5 | 233 | if (isatap) |
0bd17929 | 234 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 235 | |
aba5acdf SH |
236 | return 0; |
237 | } | |
238 | ||
c957821b PS |
239 | static const char *tnl_defname(const struct ip_tunnel_parm *p) |
240 | { | |
241 | switch (p->iph.protocol) { | |
242 | case IPPROTO_IPIP: | |
243 | if (p->i_flags & VTI_ISVTI) | |
244 | return "ip_vti0"; | |
245 | else | |
246 | return "tunl0"; | |
247 | case IPPROTO_GRE: | |
248 | return "gre0"; | |
249 | case IPPROTO_IPV6: | |
250 | return "sit0"; | |
251 | } | |
252 | return NULL; | |
253 | } | |
aba5acdf SH |
254 | |
255 | static int do_add(int cmd, int argc, char **argv) | |
256 | { | |
257 | struct ip_tunnel_parm p; | |
c957821b | 258 | const char *basedev; |
aba5acdf SH |
259 | |
260 | if (parse_args(argc, argv, cmd, &p) < 0) | |
261 | return -1; | |
262 | ||
263 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 264 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
265 | return -1; |
266 | } | |
267 | ||
a96a5d94 SH |
268 | basedev = tnl_defname(&p); |
269 | if (!basedev) { | |
270 | fprintf(stderr, | |
271 | "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); | |
aba5acdf SH |
272 | return -1; |
273 | } | |
c957821b PS |
274 | |
275 | return tnl_add_ioctl(cmd, basedev, p.name, &p); | |
aba5acdf SH |
276 | } |
277 | ||
d9bd1bd9 | 278 | static int do_del(int argc, char **argv) |
aba5acdf SH |
279 | { |
280 | struct ip_tunnel_parm p; | |
281 | ||
282 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
283 | return -1; | |
284 | ||
c957821b | 285 | return tnl_del_ioctl(tnl_defname(&p) ? : p.name, p.name, &p); |
aba5acdf SH |
286 | } |
287 | ||
3e953938 | 288 | static void print_tunnel(const void *t) |
aba5acdf | 289 | { |
3e953938 | 290 | const struct ip_tunnel_parm *p = t; |
d17b136f | 291 | struct ip_tunnel_6rd ip6rd = {}; |
a8360dd3 | 292 | SPRINT_BUF(b1); |
aba5acdf | 293 | |
aba5acdf SH |
294 | /* Do not use format_host() for local addr, |
295 | * symbolic name will not be useful. | |
296 | */ | |
a8360dd3 AC |
297 | open_json_object(NULL); |
298 | print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname", "%s: ", p->name); | |
299 | snprintf(b1, sizeof(b1), "%s/ip", tnl_strproto(p->iph.protocol)); | |
300 | print_string(PRINT_ANY, "mode", "%s ", b1); | |
301 | print_null(PRINT_FP, NULL, "remote ", NULL); | |
302 | print_color_string(PRINT_ANY, COLOR_INET, "remote", "%s ", | |
303 | p->iph.daddr || is_json_context() | |
304 | ? format_host_r(AF_INET, 4, &p->iph.daddr, b1, sizeof(b1)) | |
305 | : "any"); | |
306 | print_null(PRINT_FP, NULL, "local ", NULL); | |
307 | print_color_string(PRINT_ANY, COLOR_INET, "local", "%s", | |
308 | p->iph.saddr || is_json_context() | |
309 | ? rt_addr_n2a_r(AF_INET, 4, &p->iph.saddr, b1, sizeof(b1)) | |
310 | : "any"); | |
aba5acdf | 311 | |
86c00faa | 312 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
d17b136f | 313 | struct ip_tunnel_prl prl[16] = {}; |
a07e9912 | 314 | int i; |
0612519e | 315 | |
a07e9912 SH |
316 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); |
317 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 318 | |
a8360dd3 | 319 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) { |
a96a5d94 | 320 | for (i = 1; i < ARRAY_SIZE(prl); i++) { |
a8360dd3 AC |
321 | if (prl[i].addr == htonl(INADDR_ANY)) |
322 | continue; | |
323 | if (prl[i].flags & PRL_DEFAULT) | |
324 | print_string(PRINT_ANY, "pdr", | |
325 | " pdr %s", | |
326 | format_host(AF_INET, 4, &prl[i].addr)); | |
327 | else | |
328 | print_string(PRINT_ANY, "pr", " pr %s", | |
329 | format_host(AF_INET, 4, &prl[i].addr)); | |
a07e9912 | 330 | } |
a8360dd3 | 331 | } |
a07e9912 SH |
332 | } |
333 | ||
aba5acdf | 334 | if (p->link) { |
ea71beac | 335 | const char *n = ll_index_to_name(p->link); |
a96a5d94 | 336 | |
aba5acdf | 337 | if (n) |
a8360dd3 | 338 | print_string(PRINT_ANY, "dev", " dev %s", n); |
aba5acdf SH |
339 | } |
340 | ||
341 | if (p->iph.ttl) | |
a8360dd3 | 342 | print_uint(PRINT_ANY, "ttl", " ttl %u", p->iph.ttl); |
aba5acdf | 343 | else |
a8360dd3 | 344 | print_string(PRINT_FP, "ttl", " ttl %s", "inherit"); |
ae665a52 | 345 | |
aba5acdf | 346 | if (p->iph.tos) { |
a8360dd3 AC |
347 | SPRINT_BUF(b2); |
348 | ||
349 | if (p->iph.tos != 1) { | |
350 | if (!is_json_context() && p->iph.tos & 1) | |
351 | snprintf(b2, sizeof(b2), "%s%s", | |
352 | p->iph.tos & 1 ? "inherit/" : "", | |
353 | rtnl_dsfield_n2a(p->iph.tos & ~1, b1, sizeof(b1))); | |
354 | else | |
355 | snprintf(b2, sizeof(b2), "%s", | |
356 | rtnl_dsfield_n2a(p->iph.tos, b1, sizeof(b1))); | |
357 | print_string(PRINT_ANY, "tos", " tos %s", b2); | |
358 | } else { | |
359 | print_string(PRINT_FP, NULL, " tos %s", "inherit"); | |
360 | } | |
aba5acdf SH |
361 | } |
362 | ||
04ce8d3e | 363 | if (!(p->iph.frag_off & htons(IP_DF))) |
a8360dd3 | 364 | print_null(PRINT_ANY, "nopmtudisc", " nopmtudisc", NULL); |
aba5acdf | 365 | |
3979ef91 | 366 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
a8360dd3 AC |
367 | print_string(PRINT_ANY, "6rd-prefix", " 6rd-prefix %s", |
368 | inet_ntop(AF_INET6, &ip6rd.prefix, b1, sizeof(b1))); | |
369 | print_uint(PRINT_ANY, "6rd-prefixlen", "/%u", ip6rd.prefixlen); | |
b88215c4 | 370 | if (ip6rd.relay_prefix) { |
a8360dd3 AC |
371 | print_string(PRINT_ANY, "6rd-relay_prefix", |
372 | " 6rd-relay_prefix %s", | |
373 | format_host(AF_INET, 4, &ip6rd.relay_prefix)); | |
374 | print_uint(PRINT_ANY, "6rd-relay_prefixlen", "/%u", | |
375 | ip6rd.relay_prefixlen); | |
b88215c4 AC |
376 | } |
377 | } | |
378 | ||
ee713339 AC |
379 | tnl_print_gre_flags(p->iph.protocol, p->i_flags, p->o_flags, |
380 | p->i_key, p->o_key); | |
a8360dd3 AC |
381 | |
382 | close_json_object(); | |
aba5acdf SH |
383 | } |
384 | ||
3e953938 SP |
385 | |
386 | static void ip_tunnel_parm_initialize(const struct tnl_print_nlmsg_info *info) | |
387 | { | |
388 | struct ip_tunnel_parm *p2 = info->p2; | |
389 | ||
390 | memset(p2, 0, sizeof(*p2)); | |
391 | } | |
392 | ||
393 | static bool ip_tunnel_parm_match(const struct tnl_print_nlmsg_info *info) | |
ec895940 | 394 | { |
3e953938 SP |
395 | const struct ip_tunnel_parm *p1 = info->p1; |
396 | const struct ip_tunnel_parm *p2 = info->p2; | |
397 | ||
ec895940 SP |
398 | return ((!p1->link || p1->link == p2->link) && |
399 | (!p1->name[0] || strcmp(p1->name, p2->name) == 0) && | |
400 | (!p1->iph.daddr || p1->iph.daddr == p2->iph.daddr) && | |
401 | (!p1->iph.saddr || p1->iph.saddr == p2->iph.saddr) && | |
402 | (!p1->i_key || p1->i_key == p2->i_key)); | |
403 | } | |
404 | ||
aba5acdf SH |
405 | static int do_show(int argc, char **argv) |
406 | { | |
3e953938 | 407 | struct ip_tunnel_parm p, p1; |
c957821b | 408 | const char *basedev; |
aba5acdf SH |
409 | |
410 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) | |
411 | return -1; | |
412 | ||
a96a5d94 | 413 | basedev = tnl_defname(&p); |
3e953938 SP |
414 | if (!basedev) { |
415 | struct tnl_print_nlmsg_info info = { | |
416 | .p1 = &p, | |
417 | .p2 = &p1, | |
418 | .init = ip_tunnel_parm_initialize, | |
419 | .match = ip_tunnel_parm_match, | |
420 | .print = print_tunnel, | |
421 | }; | |
422 | ||
423 | return do_tunnels_list(&info); | |
424 | } | |
c957821b PS |
425 | |
426 | if (tnl_get_ioctl(p.name[0] ? p.name : basedev, &p)) | |
aba5acdf SH |
427 | return -1; |
428 | ||
429 | print_tunnel(&p); | |
ec895940 | 430 | fputc('\n', stdout); |
aba5acdf SH |
431 | return 0; |
432 | } | |
433 | ||
a07e9912 SH |
434 | static int do_prl(int argc, char **argv) |
435 | { | |
d17b136f | 436 | struct ip_tunnel_prl p = {}; |
a07e9912 | 437 | int count = 0; |
a07e9912 | 438 | int cmd = 0; |
26111ab1 | 439 | const char *medium = NULL; |
a07e9912 SH |
440 | |
441 | while (argc > 0) { | |
442 | if (strcmp(*argv, "prl-default") == 0) { | |
443 | NEXT_ARG(); | |
444 | cmd = SIOCADDPRL; | |
445 | p.addr = get_addr32(*argv); | |
446 | p.flags |= PRL_DEFAULT; | |
447 | count++; | |
448 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
449 | NEXT_ARG(); | |
450 | cmd = SIOCADDPRL; | |
451 | p.addr = get_addr32(*argv); | |
452 | count++; | |
453 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
454 | NEXT_ARG(); | |
455 | cmd = SIOCDELPRL; | |
456 | p.addr = get_addr32(*argv); | |
457 | count++; | |
458 | } else if (strcmp(*argv, "dev") == 0) { | |
459 | NEXT_ARG(); | |
625df645 PS |
460 | if (check_ifname(*argv)) |
461 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 462 | medium = *argv; |
a07e9912 | 463 | } else { |
a96a5d94 SH |
464 | fprintf(stderr, |
465 | "Invalid PRL parameter \"%s\"\n", *argv); | |
a07e9912 SH |
466 | exit(-1); |
467 | } | |
468 | if (count > 1) { | |
a96a5d94 SH |
469 | fprintf(stderr, |
470 | "One PRL entry at a time\n"); | |
a07e9912 SH |
471 | exit(-1); |
472 | } | |
473 | argc--; argv++; | |
474 | } | |
26111ab1 | 475 | if (!medium) { |
14645ec2 | 476 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
477 | exit(-1); |
478 | } | |
479 | ||
480 | return tnl_prl_ioctl(cmd, medium, &p); | |
481 | } | |
482 | ||
b88215c4 AC |
483 | static int do_6rd(int argc, char **argv) |
484 | { | |
d17b136f | 485 | struct ip_tunnel_6rd ip6rd = {}; |
b88215c4 | 486 | int cmd = 0; |
26111ab1 | 487 | const char *medium = NULL; |
b88215c4 AC |
488 | inet_prefix prefix; |
489 | ||
b88215c4 AC |
490 | while (argc > 0) { |
491 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
492 | NEXT_ARG(); | |
493 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
494 | invarg("invalid 6rd_prefix\n", *argv); | |
495 | cmd = SIOCADD6RD; | |
496 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
497 | ip6rd.prefixlen = prefix.bitlen; | |
498 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
499 | NEXT_ARG(); | |
500 | if (get_prefix(&prefix, *argv, AF_INET)) | |
501 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
502 | cmd = SIOCADD6RD; | |
503 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
504 | ip6rd.relay_prefixlen = prefix.bitlen; | |
505 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
506 | cmd = SIOCDEL6RD; | |
507 | } else if (strcmp(*argv, "dev") == 0) { | |
508 | NEXT_ARG(); | |
625df645 PS |
509 | if (check_ifname(*argv)) |
510 | invarg("\"dev\" not a valid ifname", *argv); | |
26111ab1 | 511 | medium = *argv; |
b88215c4 | 512 | } else { |
a96a5d94 SH |
513 | fprintf(stderr, |
514 | "Invalid 6RD parameter \"%s\"\n", *argv); | |
b88215c4 AC |
515 | exit(-1); |
516 | } | |
517 | argc--; argv++; | |
518 | } | |
26111ab1 | 519 | if (!medium) { |
14645ec2 | 520 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
521 | exit(-1); |
522 | } | |
523 | ||
524 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
525 | } | |
526 | ||
a96a5d94 SH |
527 | static int tunnel_mode_is_ipv6(char *tunnel_mode) |
528 | { | |
529 | static const char * const ipv6_modes[] = { | |
cc9c1dfa KS |
530 | "ipv6/ipv6", "ip6ip6", |
531 | "vti6", | |
532 | "ip/ipv6", "ipv4/ipv6", "ipip6", "ip4ip6", | |
533 | "ip6gre", "gre/ipv6", | |
534 | "any/ipv6", "any" | |
535 | }; | |
536 | int i; | |
537 | ||
a96a5d94 | 538 | for (i = 0; i < ARRAY_SIZE(ipv6_modes); i++) { |
cc9c1dfa KS |
539 | if (strcmp(ipv6_modes[i], tunnel_mode) == 0) |
540 | return 1; | |
541 | } | |
542 | return 0; | |
543 | } | |
544 | ||
aba5acdf SH |
545 | int do_iptunnel(int argc, char **argv) |
546 | { | |
cc9c1dfa KS |
547 | int i; |
548 | ||
549 | for (i = 0; i < argc - 1; i++) { | |
550 | if (strcmp(argv[i], "mode") == 0) { | |
551 | if (tunnel_mode_is_ipv6(argv[i + 1])) | |
552 | preferred_family = AF_INET6; | |
553 | break; | |
554 | } | |
555 | } | |
d9bd1bd9 MN |
556 | switch (preferred_family) { |
557 | case AF_UNSPEC: | |
558 | preferred_family = AF_INET; | |
559 | break; | |
560 | case AF_INET: | |
561 | break; | |
288384f2 MN |
562 | /* |
563 | * This is silly enough but we have no easy way to make it | |
564 | * protocol-independent because of unarranged structure between | |
565 | * IPv4 and IPv6. | |
566 | */ | |
567 | case AF_INET6: | |
568 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 569 | default: |
14645ec2 | 570 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
571 | exit(-1); |
572 | } | |
573 | ||
aba5acdf SH |
574 | if (argc > 0) { |
575 | if (matches(*argv, "add") == 0) | |
04ce8d3e | 576 | return do_add(SIOCADDTUNNEL, argc - 1, argv + 1); |
aba5acdf | 577 | if (matches(*argv, "change") == 0) |
04ce8d3e | 578 | return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1); |
6e30461e | 579 | if (matches(*argv, "delete") == 0) |
04ce8d3e | 580 | return do_del(argc - 1, argv + 1); |
aba5acdf SH |
581 | if (matches(*argv, "show") == 0 || |
582 | matches(*argv, "lst") == 0 || | |
583 | matches(*argv, "list") == 0) | |
04ce8d3e | 584 | return do_show(argc - 1, argv + 1); |
a07e9912 | 585 | if (matches(*argv, "prl") == 0) |
04ce8d3e | 586 | return do_prl(argc - 1, argv + 1); |
b88215c4 | 587 | if (matches(*argv, "6rd") == 0) |
04ce8d3e | 588 | return do_6rd(argc - 1, argv + 1); |
aba5acdf SH |
589 | if (matches(*argv, "help") == 0) |
590 | usage(); | |
591 | } else | |
592 | return do_show(0, NULL); | |
593 | ||
14645ec2 | 594 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
595 | exit(-1); |
596 | } |