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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 | ||
aba5acdf SH |
50 | static int parse_args(int argc, char **argv, int cmd, struct ip_tunnel_parm *p) |
51 | { | |
52 | int count = 0; | |
53 | char medium[IFNAMSIZ]; | |
0bd17929 | 54 | int isatap = 0; |
aba5acdf SH |
55 | |
56 | memset(p, 0, sizeof(*p)); | |
57 | memset(&medium, 0, sizeof(medium)); | |
58 | ||
59 | p->iph.version = 4; | |
60 | p->iph.ihl = 5; | |
61 | #ifndef IP_DF | |
62 | #define IP_DF 0x4000 /* Flag: "Don't Fragment" */ | |
63 | #endif | |
64 | p->iph.frag_off = htons(IP_DF); | |
65 | ||
66 | while (argc > 0) { | |
67 | if (strcmp(*argv, "mode") == 0) { | |
68 | NEXT_ARG(); | |
69 | if (strcmp(*argv, "ipip") == 0 || | |
70 | strcmp(*argv, "ip/ip") == 0) { | |
71 | if (p->iph.protocol && p->iph.protocol != IPPROTO_IPIP) { | |
72 | fprintf(stderr,"You managed to ask for more than one tunnel mode.\n"); | |
73 | exit(-1); | |
74 | } | |
75 | p->iph.protocol = IPPROTO_IPIP; | |
76 | } else if (strcmp(*argv, "gre") == 0 || | |
77 | strcmp(*argv, "gre/ip") == 0) { | |
78 | if (p->iph.protocol && p->iph.protocol != IPPROTO_GRE) { | |
79 | fprintf(stderr,"You managed to ask for more than one tunnel mode.\n"); | |
80 | exit(-1); | |
81 | } | |
82 | p->iph.protocol = IPPROTO_GRE; | |
83 | } else if (strcmp(*argv, "sit") == 0 || | |
84 | strcmp(*argv, "ipv6/ip") == 0) { | |
85 | if (p->iph.protocol && p->iph.protocol != IPPROTO_IPV6) { | |
86 | fprintf(stderr,"You managed to ask for more than one tunnel mode.\n"); | |
87 | exit(-1); | |
88 | } | |
89 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
90 | } else if (strcmp(*argv, "isatap") == 0) { |
91 | if (p->iph.protocol && p->iph.protocol != IPPROTO_IPV6) { | |
92 | fprintf(stderr, "You managed to ask for more than one tunnel mode.\n"); | |
93 | exit(-1); | |
94 | } | |
95 | p->iph.protocol = IPPROTO_IPV6; | |
96 | isatap++; | |
eec47608 SM |
97 | } else if (strcmp(*argv, "vti") == 0) { |
98 | if (p->iph.protocol && p->iph.protocol != IPPROTO_IPIP) { | |
99 | fprintf(stderr, "You managed to ask for more than one tunnel mode.\n"); | |
100 | exit(-1); | |
101 | } | |
102 | p->iph.protocol = IPPROTO_IPIP; | |
103 | p->i_flags |= VTI_ISVTI; | |
aba5acdf | 104 | } else { |
14645ec2 | 105 | fprintf(stderr,"Unknown tunnel mode \"%s\"\n", *argv); |
aba5acdf SH |
106 | exit(-1); |
107 | } | |
108 | } else if (strcmp(*argv, "key") == 0) { | |
109 | unsigned uval; | |
110 | NEXT_ARG(); | |
111 | p->i_flags |= GRE_KEY; | |
112 | p->o_flags |= GRE_KEY; | |
113 | if (strchr(*argv, '.')) | |
114 | p->i_key = p->o_key = get_addr32(*argv); | |
115 | else { | |
116 | if (get_unsigned(&uval, *argv, 0)<0) { | |
14645ec2 | 117 | fprintf(stderr, "invalid value for \"key\": \"%s\"; it should be an unsigned integer\n", *argv); |
aba5acdf SH |
118 | exit(-1); |
119 | } | |
120 | p->i_key = p->o_key = htonl(uval); | |
121 | } | |
122 | } else if (strcmp(*argv, "ikey") == 0) { | |
123 | unsigned uval; | |
124 | NEXT_ARG(); | |
125 | p->i_flags |= GRE_KEY; | |
126 | if (strchr(*argv, '.')) | |
4282c6c5 | 127 | p->i_key = get_addr32(*argv); |
aba5acdf SH |
128 | else { |
129 | if (get_unsigned(&uval, *argv, 0)<0) { | |
14645ec2 | 130 | fprintf(stderr, "invalid value for \"ikey\": \"%s\"; it should be an unsigned integer\n", *argv); |
aba5acdf SH |
131 | exit(-1); |
132 | } | |
133 | p->i_key = htonl(uval); | |
134 | } | |
135 | } else if (strcmp(*argv, "okey") == 0) { | |
136 | unsigned uval; | |
137 | NEXT_ARG(); | |
138 | p->o_flags |= GRE_KEY; | |
139 | if (strchr(*argv, '.')) | |
140 | p->o_key = get_addr32(*argv); | |
141 | else { | |
142 | if (get_unsigned(&uval, *argv, 0)<0) { | |
14645ec2 | 143 | fprintf(stderr, "invalid value for \"okey\": \"%s\"; it should be an unsigned integer\n", *argv); |
aba5acdf SH |
144 | exit(-1); |
145 | } | |
146 | p->o_key = htonl(uval); | |
147 | } | |
148 | } else if (strcmp(*argv, "seq") == 0) { | |
149 | p->i_flags |= GRE_SEQ; | |
150 | p->o_flags |= GRE_SEQ; | |
151 | } else if (strcmp(*argv, "iseq") == 0) { | |
152 | p->i_flags |= GRE_SEQ; | |
153 | } else if (strcmp(*argv, "oseq") == 0) { | |
154 | p->o_flags |= GRE_SEQ; | |
155 | } else if (strcmp(*argv, "csum") == 0) { | |
156 | p->i_flags |= GRE_CSUM; | |
157 | p->o_flags |= GRE_CSUM; | |
158 | } else if (strcmp(*argv, "icsum") == 0) { | |
159 | p->i_flags |= GRE_CSUM; | |
160 | } else if (strcmp(*argv, "ocsum") == 0) { | |
161 | p->o_flags |= GRE_CSUM; | |
162 | } else if (strcmp(*argv, "nopmtudisc") == 0) { | |
163 | p->iph.frag_off = 0; | |
164 | } else if (strcmp(*argv, "pmtudisc") == 0) { | |
165 | p->iph.frag_off = htons(IP_DF); | |
166 | } else if (strcmp(*argv, "remote") == 0) { | |
167 | NEXT_ARG(); | |
168 | if (strcmp(*argv, "any")) | |
169 | p->iph.daddr = get_addr32(*argv); | |
170 | } else if (strcmp(*argv, "local") == 0) { | |
171 | NEXT_ARG(); | |
172 | if (strcmp(*argv, "any")) | |
173 | p->iph.saddr = get_addr32(*argv); | |
174 | } else if (strcmp(*argv, "dev") == 0) { | |
175 | NEXT_ARG(); | |
176 | strncpy(medium, *argv, IFNAMSIZ-1); | |
eddde110 YH |
177 | } else if (strcmp(*argv, "ttl") == 0 || |
178 | strcmp(*argv, "hoplimit") == 0) { | |
aba5acdf SH |
179 | unsigned uval; |
180 | NEXT_ARG(); | |
181 | if (strcmp(*argv, "inherit") != 0) { | |
182 | if (get_unsigned(&uval, *argv, 0)) | |
183 | invarg("invalid TTL\n", *argv); | |
184 | if (uval > 255) | |
185 | invarg("TTL must be <=255\n", *argv); | |
186 | p->iph.ttl = uval; | |
187 | } | |
188 | } else if (strcmp(*argv, "tos") == 0 || | |
eddde110 | 189 | strcmp(*argv, "tclass") == 0 || |
aba5acdf | 190 | matches(*argv, "dsfield") == 0) { |
e59fd3db | 191 | char *dsfield; |
aba5acdf SH |
192 | __u32 uval; |
193 | NEXT_ARG(); | |
e59fd3db DW |
194 | dsfield = *argv; |
195 | strsep(&dsfield, "/"); | |
aba5acdf | 196 | if (strcmp(*argv, "inherit") != 0) { |
e59fd3db DW |
197 | dsfield = *argv; |
198 | p->iph.tos = 0; | |
aba5acdf SH |
199 | } else |
200 | p->iph.tos = 1; | |
e59fd3db DW |
201 | if (dsfield) { |
202 | if (rtnl_dsfield_a2n(&uval, dsfield)) | |
203 | invarg("bad TOS value", *argv); | |
204 | p->iph.tos |= uval; | |
205 | } | |
aba5acdf SH |
206 | } else { |
207 | if (strcmp(*argv, "name") == 0) { | |
208 | NEXT_ARG(); | |
1f1ae524 | 209 | } else if (matches(*argv, "help") == 0) |
aba5acdf SH |
210 | usage(); |
211 | if (p->name[0]) | |
212 | duparg2("name", *argv); | |
213 | strncpy(p->name, *argv, IFNAMSIZ); | |
214 | if (cmd == SIOCCHGTUNNEL && count == 0) { | |
215 | struct ip_tunnel_parm old_p; | |
216 | memset(&old_p, 0, sizeof(old_p)); | |
d9bd1bd9 | 217 | if (tnl_get_ioctl(*argv, &old_p)) |
aba5acdf SH |
218 | return -1; |
219 | *p = old_p; | |
220 | } | |
221 | } | |
222 | count++; | |
223 | argc--; argv++; | |
224 | } | |
225 | ||
226 | ||
227 | if (p->iph.protocol == 0) { | |
228 | if (memcmp(p->name, "gre", 3) == 0) | |
229 | p->iph.protocol = IPPROTO_GRE; | |
230 | else if (memcmp(p->name, "ipip", 4) == 0) | |
231 | p->iph.protocol = IPPROTO_IPIP; | |
232 | else if (memcmp(p->name, "sit", 3) == 0) | |
233 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
234 | else if (memcmp(p->name, "isatap", 6) == 0) { |
235 | p->iph.protocol = IPPROTO_IPV6; | |
236 | isatap++; | |
eec47608 SM |
237 | } else if (memcmp(p->name, "vti", 3) == 0) { |
238 | p->iph.protocol = IPPROTO_IPIP; | |
239 | p->i_flags |= VTI_ISVTI; | |
0bd17929 | 240 | } |
aba5acdf SH |
241 | } |
242 | ||
1c28bd59 HL |
243 | if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) { |
244 | if (!(p->i_flags & VTI_ISVTI) && | |
245 | (p->iph.protocol != IPPROTO_GRE)) { | |
14645ec2 | 246 | fprintf(stderr, "Keys are not allowed with ipip and sit tunnels\n"); |
aba5acdf SH |
247 | return -1; |
248 | } | |
249 | } | |
250 | ||
251 | if (medium[0]) { | |
ea71beac | 252 | p->link = if_nametoindex(medium); |
0cb6bb51 CW |
253 | if (p->link == 0) { |
254 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
255 | medium); | |
aba5acdf | 256 | return -1; |
0cb6bb51 | 257 | } |
aba5acdf SH |
258 | } |
259 | ||
260 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
261 | p->i_key = p->iph.daddr; | |
262 | p->i_flags |= GRE_KEY; | |
263 | } | |
264 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
265 | p->o_key = p->iph.daddr; | |
266 | p->o_flags |= GRE_KEY; | |
267 | } | |
268 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 269 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
270 | return -1; |
271 | } | |
eeef12c5 | 272 | if (isatap) |
0bd17929 | 273 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 274 | |
aba5acdf SH |
275 | return 0; |
276 | } | |
277 | ||
278 | ||
279 | static int do_add(int cmd, int argc, char **argv) | |
280 | { | |
281 | struct ip_tunnel_parm p; | |
282 | ||
283 | if (parse_args(argc, argv, cmd, &p) < 0) | |
284 | return -1; | |
285 | ||
286 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 287 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
288 | return -1; |
289 | } | |
290 | ||
291 | switch (p.iph.protocol) { | |
292 | case IPPROTO_IPIP: | |
23d526c4 | 293 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 294 | return tnl_add_ioctl(cmd, "ip_vti0", p.name, &p); |
23d526c4 DP |
295 | else |
296 | return tnl_add_ioctl(cmd, "tunl0", p.name, &p); | |
aba5acdf | 297 | case IPPROTO_GRE: |
d9bd1bd9 | 298 | return tnl_add_ioctl(cmd, "gre0", p.name, &p); |
aba5acdf | 299 | case IPPROTO_IPV6: |
d9bd1bd9 | 300 | return tnl_add_ioctl(cmd, "sit0", p.name, &p); |
ae665a52 | 301 | default: |
eec47608 | 302 | fprintf(stderr, "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); |
aba5acdf SH |
303 | return -1; |
304 | } | |
305 | return -1; | |
306 | } | |
307 | ||
d9bd1bd9 | 308 | static int do_del(int argc, char **argv) |
aba5acdf SH |
309 | { |
310 | struct ip_tunnel_parm p; | |
311 | ||
312 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
313 | return -1; | |
314 | ||
315 | switch (p.iph.protocol) { | |
316 | case IPPROTO_IPIP: | |
23d526c4 | 317 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 318 | return tnl_del_ioctl("ip_vti0", p.name, &p); |
23d526c4 DP |
319 | else |
320 | return tnl_del_ioctl("tunl0", p.name, &p); | |
aba5acdf | 321 | case IPPROTO_GRE: |
d9bd1bd9 | 322 | return tnl_del_ioctl("gre0", p.name, &p); |
aba5acdf | 323 | case IPPROTO_IPV6: |
d9bd1bd9 | 324 | return tnl_del_ioctl("sit0", p.name, &p); |
ae665a52 | 325 | default: |
d9bd1bd9 | 326 | return tnl_del_ioctl(p.name, p.name, &p); |
aba5acdf SH |
327 | } |
328 | return -1; | |
329 | } | |
330 | ||
d9bd1bd9 | 331 | static void print_tunnel(struct ip_tunnel_parm *p) |
aba5acdf | 332 | { |
b88215c4 | 333 | struct ip_tunnel_6rd ip6rd; |
aba5acdf SH |
334 | char s1[1024]; |
335 | char s2[1024]; | |
aba5acdf | 336 | |
b88215c4 | 337 | memset(&ip6rd, 0, sizeof(ip6rd)); |
aba5acdf SH |
338 | |
339 | /* Do not use format_host() for local addr, | |
340 | * symbolic name will not be useful. | |
341 | */ | |
342 | printf("%s: %s/ip remote %s local %s ", | |
343 | p->name, | |
d9bd1bd9 | 344 | tnl_strproto(p->iph.protocol), |
aba5acdf | 345 | p->iph.daddr ? format_host(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any", |
26dcdf3a | 346 | p->iph.saddr ? rt_addr_n2a(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any"); |
aba5acdf | 347 | |
86c00faa | 348 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
a07e9912 SH |
349 | struct ip_tunnel_prl prl[16]; |
350 | int i; | |
0612519e | 351 | |
a07e9912 SH |
352 | memset(prl, 0, sizeof(prl)); |
353 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); | |
354 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 355 | |
a07e9912 SH |
356 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) |
357 | for (i = 1; i < sizeof(prl) / sizeof(prl[0]); i++) | |
358 | { | |
359 | if (prl[i].addr != htonl(INADDR_ANY)) { | |
0612519e | 360 | printf(" %s %s ", |
a07e9912 SH |
361 | (prl[i].flags & PRL_DEFAULT) ? "pdr" : "pr", |
362 | format_host(AF_INET, 4, &prl[i].addr, s1, sizeof(s1))); | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
aba5acdf | 367 | if (p->link) { |
ea71beac | 368 | const char *n = ll_index_to_name(p->link); |
aba5acdf SH |
369 | if (n) |
370 | printf(" dev %s ", n); | |
371 | } | |
372 | ||
373 | if (p->iph.ttl) | |
374 | printf(" ttl %d ", p->iph.ttl); | |
375 | else | |
376 | printf(" ttl inherit "); | |
ae665a52 | 377 | |
aba5acdf SH |
378 | if (p->iph.tos) { |
379 | SPRINT_BUF(b1); | |
380 | printf(" tos"); | |
381 | if (p->iph.tos&1) | |
382 | printf(" inherit"); | |
383 | if (p->iph.tos&~1) | |
384 | printf("%c%s ", p->iph.tos&1 ? '/' : ' ', | |
385 | rtnl_dsfield_n2a(p->iph.tos&~1, b1, sizeof(b1))); | |
386 | } | |
387 | ||
388 | if (!(p->iph.frag_off&htons(IP_DF))) | |
389 | printf(" nopmtudisc"); | |
390 | ||
3979ef91 | 391 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
b88215c4 AC |
392 | printf(" 6rd-prefix %s/%u ", |
393 | inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), | |
394 | ip6rd.prefixlen); | |
395 | if (ip6rd.relay_prefix) { | |
396 | printf("6rd-relay_prefix %s/%u ", | |
397 | format_host(AF_INET, 4, &ip6rd.relay_prefix, s1, sizeof(s1)), | |
398 | ip6rd.relay_prefixlen); | |
399 | } | |
400 | } | |
401 | ||
aba5acdf | 402 | if ((p->i_flags&GRE_KEY) && (p->o_flags&GRE_KEY) && p->o_key == p->i_key) |
6f4f7c46 | 403 | printf(" key %u", ntohl(p->i_key)); |
aba5acdf SH |
404 | else if ((p->i_flags|p->o_flags)&GRE_KEY) { |
405 | if (p->i_flags&GRE_KEY) | |
6f4f7c46 | 406 | printf(" ikey %u ", ntohl(p->i_key)); |
aba5acdf | 407 | if (p->o_flags&GRE_KEY) |
6f4f7c46 | 408 | printf(" okey %u ", ntohl(p->o_key)); |
aba5acdf SH |
409 | } |
410 | ||
411 | if (p->i_flags&GRE_SEQ) | |
4cb8d030 | 412 | printf("%s Drop packets out of sequence.", _SL_); |
aba5acdf SH |
413 | if (p->i_flags&GRE_CSUM) |
414 | printf("%s Checksum in received packet is required.", _SL_); | |
415 | if (p->o_flags&GRE_SEQ) | |
416 | printf("%s Sequence packets on output.", _SL_); | |
417 | if (p->o_flags&GRE_CSUM) | |
418 | printf("%s Checksum output packets.", _SL_); | |
419 | } | |
420 | ||
421 | static int do_tunnels_list(struct ip_tunnel_parm *p) | |
422 | { | |
423 | char name[IFNAMSIZ]; | |
424 | unsigned long rx_bytes, rx_packets, rx_errs, rx_drops, | |
425 | rx_fifo, rx_frame, | |
426 | tx_bytes, tx_packets, tx_errs, tx_drops, | |
427 | tx_fifo, tx_colls, tx_carrier, rx_multi; | |
aba5acdf SH |
428 | struct ip_tunnel_parm p1; |
429 | ||
430 | char buf[512]; | |
431 | FILE *fp = fopen("/proc/net/dev", "r"); | |
432 | if (fp == NULL) { | |
433 | perror("fopen"); | |
434 | return -1; | |
435 | } | |
436 | ||
38c867d2 SH |
437 | /* skip header lines */ |
438 | if (!fgets(buf, sizeof(buf), fp) || | |
439 | !fgets(buf, sizeof(buf), fp)) { | |
440 | fprintf(stderr, "/proc/net/dev read error\n"); | |
297452a1 | 441 | fclose(fp); |
38c867d2 SH |
442 | return -1; |
443 | } | |
aba5acdf SH |
444 | |
445 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
ea71beac | 446 | int index, type; |
aba5acdf SH |
447 | char *ptr; |
448 | buf[sizeof(buf) - 1] = 0; | |
449 | if ((ptr = strchr(buf, ':')) == NULL || | |
450 | (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { | |
14645ec2 | 451 | fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n"); |
297452a1 | 452 | fclose(fp); |
aba5acdf SH |
453 | return -1; |
454 | } | |
455 | if (sscanf(ptr, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld", | |
456 | &rx_bytes, &rx_packets, &rx_errs, &rx_drops, | |
457 | &rx_fifo, &rx_frame, &rx_multi, | |
458 | &tx_bytes, &tx_packets, &tx_errs, &tx_drops, | |
459 | &tx_fifo, &tx_colls, &tx_carrier) != 14) | |
460 | continue; | |
461 | if (p->name[0] && strcmp(p->name, name)) | |
462 | continue; | |
ea71beac SH |
463 | index = ll_name_to_index(name); |
464 | if (index == 0) | |
465 | continue; | |
466 | type = ll_index_to_type(index); | |
aba5acdf | 467 | if (type == -1) { |
14645ec2 | 468 | fprintf(stderr, "Failed to get type of \"%s\"\n", name); |
aba5acdf SH |
469 | continue; |
470 | } | |
471 | if (type != ARPHRD_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT) | |
472 | continue; | |
473 | memset(&p1, 0, sizeof(p1)); | |
d9bd1bd9 | 474 | if (tnl_get_ioctl(name, &p1)) |
aba5acdf SH |
475 | continue; |
476 | if ((p->link && p1.link != p->link) || | |
477 | (p->name[0] && strcmp(p1.name, p->name)) || | |
478 | (p->iph.daddr && p1.iph.daddr != p->iph.daddr) || | |
479 | (p->iph.saddr && p1.iph.saddr != p->iph.saddr) || | |
480 | (p->i_key && p1.i_key != p->i_key)) | |
481 | continue; | |
482 | print_tunnel(&p1); | |
483 | if (show_stats) { | |
484 | printf("%s", _SL_); | |
485 | printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_); | |
486 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s", | |
487 | rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_); | |
488 | printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_); | |
489 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld", | |
490 | tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops); | |
491 | } | |
492 | printf("\n"); | |
493 | } | |
297452a1 | 494 | fclose(fp); |
aba5acdf SH |
495 | return 0; |
496 | } | |
497 | ||
498 | static int do_show(int argc, char **argv) | |
499 | { | |
500 | int err; | |
501 | struct ip_tunnel_parm p; | |
502 | ||
ea71beac | 503 | ll_init_map(&rth); |
aba5acdf SH |
504 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) |
505 | return -1; | |
506 | ||
507 | switch (p.iph.protocol) { | |
ae665a52 | 508 | case IPPROTO_IPIP: |
23d526c4 | 509 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 510 | err = tnl_get_ioctl(p.name[0] ? p.name : "ip_vti0", &p); |
23d526c4 DP |
511 | else |
512 | err = tnl_get_ioctl(p.name[0] ? p.name : "tunl0", &p); | |
aba5acdf SH |
513 | break; |
514 | case IPPROTO_GRE: | |
d9bd1bd9 | 515 | err = tnl_get_ioctl(p.name[0] ? p.name : "gre0", &p); |
aba5acdf SH |
516 | break; |
517 | case IPPROTO_IPV6: | |
d9bd1bd9 | 518 | err = tnl_get_ioctl(p.name[0] ? p.name : "sit0", &p); |
aba5acdf SH |
519 | break; |
520 | default: | |
521 | do_tunnels_list(&p); | |
522 | return 0; | |
523 | } | |
524 | if (err) | |
525 | return -1; | |
526 | ||
527 | print_tunnel(&p); | |
528 | printf("\n"); | |
529 | return 0; | |
530 | } | |
531 | ||
a07e9912 SH |
532 | static int do_prl(int argc, char **argv) |
533 | { | |
534 | struct ip_tunnel_prl p; | |
535 | int count = 0; | |
536 | int devname = 0; | |
537 | int cmd = 0; | |
538 | char medium[IFNAMSIZ]; | |
539 | ||
540 | memset(&p, 0, sizeof(p)); | |
541 | memset(&medium, 0, sizeof(medium)); | |
542 | ||
543 | while (argc > 0) { | |
544 | if (strcmp(*argv, "prl-default") == 0) { | |
545 | NEXT_ARG(); | |
546 | cmd = SIOCADDPRL; | |
547 | p.addr = get_addr32(*argv); | |
548 | p.flags |= PRL_DEFAULT; | |
549 | count++; | |
550 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
551 | NEXT_ARG(); | |
552 | cmd = SIOCADDPRL; | |
553 | p.addr = get_addr32(*argv); | |
554 | count++; | |
555 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
556 | NEXT_ARG(); | |
557 | cmd = SIOCDELPRL; | |
558 | p.addr = get_addr32(*argv); | |
559 | count++; | |
560 | } else if (strcmp(*argv, "dev") == 0) { | |
561 | NEXT_ARG(); | |
562 | strncpy(medium, *argv, IFNAMSIZ-1); | |
563 | devname++; | |
564 | } else { | |
14645ec2 | 565 | fprintf(stderr,"Invalid PRL parameter \"%s\"\n", *argv); |
a07e9912 SH |
566 | exit(-1); |
567 | } | |
568 | if (count > 1) { | |
14645ec2 | 569 | fprintf(stderr,"One PRL entry at a time\n"); |
a07e9912 SH |
570 | exit(-1); |
571 | } | |
572 | argc--; argv++; | |
573 | } | |
574 | if (devname == 0) { | |
14645ec2 | 575 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
576 | exit(-1); |
577 | } | |
578 | ||
579 | return tnl_prl_ioctl(cmd, medium, &p); | |
580 | } | |
581 | ||
b88215c4 AC |
582 | static int do_6rd(int argc, char **argv) |
583 | { | |
584 | struct ip_tunnel_6rd ip6rd; | |
585 | int devname = 0; | |
586 | int cmd = 0; | |
587 | char medium[IFNAMSIZ]; | |
588 | inet_prefix prefix; | |
589 | ||
590 | memset(&ip6rd, 0, sizeof(ip6rd)); | |
591 | memset(&medium, 0, sizeof(medium)); | |
592 | ||
593 | while (argc > 0) { | |
594 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
595 | NEXT_ARG(); | |
596 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
597 | invarg("invalid 6rd_prefix\n", *argv); | |
598 | cmd = SIOCADD6RD; | |
599 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
600 | ip6rd.prefixlen = prefix.bitlen; | |
601 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
602 | NEXT_ARG(); | |
603 | if (get_prefix(&prefix, *argv, AF_INET)) | |
604 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
605 | cmd = SIOCADD6RD; | |
606 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
607 | ip6rd.relay_prefixlen = prefix.bitlen; | |
608 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
609 | cmd = SIOCDEL6RD; | |
610 | } else if (strcmp(*argv, "dev") == 0) { | |
611 | NEXT_ARG(); | |
612 | strncpy(medium, *argv, IFNAMSIZ-1); | |
613 | devname++; | |
614 | } else { | |
14645ec2 | 615 | fprintf(stderr,"Invalid 6RD parameter \"%s\"\n", *argv); |
b88215c4 AC |
616 | exit(-1); |
617 | } | |
618 | argc--; argv++; | |
619 | } | |
620 | if (devname == 0) { | |
14645ec2 | 621 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
622 | exit(-1); |
623 | } | |
624 | ||
625 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
626 | } | |
627 | ||
aba5acdf SH |
628 | int do_iptunnel(int argc, char **argv) |
629 | { | |
d9bd1bd9 MN |
630 | switch (preferred_family) { |
631 | case AF_UNSPEC: | |
632 | preferred_family = AF_INET; | |
633 | break; | |
634 | case AF_INET: | |
635 | break; | |
288384f2 MN |
636 | /* |
637 | * This is silly enough but we have no easy way to make it | |
638 | * protocol-independent because of unarranged structure between | |
639 | * IPv4 and IPv6. | |
640 | */ | |
641 | case AF_INET6: | |
642 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 643 | default: |
14645ec2 | 644 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
645 | exit(-1); |
646 | } | |
647 | ||
aba5acdf SH |
648 | if (argc > 0) { |
649 | if (matches(*argv, "add") == 0) | |
650 | return do_add(SIOCADDTUNNEL, argc-1, argv+1); | |
651 | if (matches(*argv, "change") == 0) | |
652 | return do_add(SIOCCHGTUNNEL, argc-1, argv+1); | |
6e30461e | 653 | if (matches(*argv, "delete") == 0) |
aba5acdf SH |
654 | return do_del(argc-1, argv+1); |
655 | if (matches(*argv, "show") == 0 || | |
656 | matches(*argv, "lst") == 0 || | |
657 | matches(*argv, "list") == 0) | |
658 | return do_show(argc-1, argv+1); | |
a07e9912 SH |
659 | if (matches(*argv, "prl") == 0) |
660 | return do_prl(argc-1, argv+1); | |
b88215c4 AC |
661 | if (matches(*argv, "6rd") == 0) |
662 | return do_6rd(argc-1, argv+1); | |
aba5acdf SH |
663 | if (matches(*argv, "help") == 0) |
664 | usage(); | |
665 | } else | |
666 | return do_show(0, NULL); | |
667 | ||
14645ec2 | 668 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
669 | exit(-1); |
670 | } |