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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); | |
4e4b7832 TLSC |
170 | else |
171 | p->iph.daddr = htonl(INADDR_ANY); | |
aba5acdf SH |
172 | } else if (strcmp(*argv, "local") == 0) { |
173 | NEXT_ARG(); | |
174 | if (strcmp(*argv, "any")) | |
175 | p->iph.saddr = get_addr32(*argv); | |
4e4b7832 TLSC |
176 | else |
177 | p->iph.saddr = htonl(INADDR_ANY); | |
aba5acdf SH |
178 | } else if (strcmp(*argv, "dev") == 0) { |
179 | NEXT_ARG(); | |
180 | strncpy(medium, *argv, IFNAMSIZ-1); | |
eddde110 YH |
181 | } else if (strcmp(*argv, "ttl") == 0 || |
182 | strcmp(*argv, "hoplimit") == 0) { | |
aba5acdf SH |
183 | unsigned uval; |
184 | NEXT_ARG(); | |
185 | if (strcmp(*argv, "inherit") != 0) { | |
186 | if (get_unsigned(&uval, *argv, 0)) | |
187 | invarg("invalid TTL\n", *argv); | |
188 | if (uval > 255) | |
189 | invarg("TTL must be <=255\n", *argv); | |
190 | p->iph.ttl = uval; | |
191 | } | |
192 | } else if (strcmp(*argv, "tos") == 0 || | |
eddde110 | 193 | strcmp(*argv, "tclass") == 0 || |
aba5acdf | 194 | matches(*argv, "dsfield") == 0) { |
e59fd3db | 195 | char *dsfield; |
aba5acdf SH |
196 | __u32 uval; |
197 | NEXT_ARG(); | |
e59fd3db DW |
198 | dsfield = *argv; |
199 | strsep(&dsfield, "/"); | |
aba5acdf | 200 | if (strcmp(*argv, "inherit") != 0) { |
e59fd3db DW |
201 | dsfield = *argv; |
202 | p->iph.tos = 0; | |
aba5acdf SH |
203 | } else |
204 | p->iph.tos = 1; | |
e59fd3db DW |
205 | if (dsfield) { |
206 | if (rtnl_dsfield_a2n(&uval, dsfield)) | |
207 | invarg("bad TOS value", *argv); | |
208 | p->iph.tos |= uval; | |
209 | } | |
aba5acdf SH |
210 | } else { |
211 | if (strcmp(*argv, "name") == 0) { | |
212 | NEXT_ARG(); | |
1f1ae524 | 213 | } else if (matches(*argv, "help") == 0) |
aba5acdf SH |
214 | usage(); |
215 | if (p->name[0]) | |
216 | duparg2("name", *argv); | |
217 | strncpy(p->name, *argv, IFNAMSIZ); | |
218 | if (cmd == SIOCCHGTUNNEL && count == 0) { | |
219 | struct ip_tunnel_parm old_p; | |
220 | memset(&old_p, 0, sizeof(old_p)); | |
d9bd1bd9 | 221 | if (tnl_get_ioctl(*argv, &old_p)) |
aba5acdf SH |
222 | return -1; |
223 | *p = old_p; | |
224 | } | |
225 | } | |
226 | count++; | |
227 | argc--; argv++; | |
228 | } | |
229 | ||
230 | ||
231 | if (p->iph.protocol == 0) { | |
232 | if (memcmp(p->name, "gre", 3) == 0) | |
233 | p->iph.protocol = IPPROTO_GRE; | |
234 | else if (memcmp(p->name, "ipip", 4) == 0) | |
235 | p->iph.protocol = IPPROTO_IPIP; | |
236 | else if (memcmp(p->name, "sit", 3) == 0) | |
237 | p->iph.protocol = IPPROTO_IPV6; | |
0bd17929 TF |
238 | else if (memcmp(p->name, "isatap", 6) == 0) { |
239 | p->iph.protocol = IPPROTO_IPV6; | |
240 | isatap++; | |
eec47608 SM |
241 | } else if (memcmp(p->name, "vti", 3) == 0) { |
242 | p->iph.protocol = IPPROTO_IPIP; | |
243 | p->i_flags |= VTI_ISVTI; | |
0bd17929 | 244 | } |
aba5acdf SH |
245 | } |
246 | ||
1c28bd59 HL |
247 | if ((p->i_flags & GRE_KEY) || (p->o_flags & GRE_KEY)) { |
248 | if (!(p->i_flags & VTI_ISVTI) && | |
249 | (p->iph.protocol != IPPROTO_GRE)) { | |
14645ec2 | 250 | fprintf(stderr, "Keys are not allowed with ipip and sit tunnels\n"); |
aba5acdf SH |
251 | return -1; |
252 | } | |
253 | } | |
254 | ||
255 | if (medium[0]) { | |
ea71beac | 256 | p->link = if_nametoindex(medium); |
0cb6bb51 CW |
257 | if (p->link == 0) { |
258 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
259 | medium); | |
aba5acdf | 260 | return -1; |
0cb6bb51 | 261 | } |
aba5acdf SH |
262 | } |
263 | ||
264 | if (p->i_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
265 | p->i_key = p->iph.daddr; | |
266 | p->i_flags |= GRE_KEY; | |
267 | } | |
268 | if (p->o_key == 0 && IN_MULTICAST(ntohl(p->iph.daddr))) { | |
269 | p->o_key = p->iph.daddr; | |
270 | p->o_flags |= GRE_KEY; | |
271 | } | |
272 | if (IN_MULTICAST(ntohl(p->iph.daddr)) && !p->iph.saddr) { | |
14645ec2 | 273 | fprintf(stderr, "A broadcast tunnel requires a source address\n"); |
aba5acdf SH |
274 | return -1; |
275 | } | |
eeef12c5 | 276 | if (isatap) |
0bd17929 | 277 | p->i_flags |= SIT_ISATAP; |
0bd17929 | 278 | |
aba5acdf SH |
279 | return 0; |
280 | } | |
281 | ||
282 | ||
283 | static int do_add(int cmd, int argc, char **argv) | |
284 | { | |
285 | struct ip_tunnel_parm p; | |
286 | ||
287 | if (parse_args(argc, argv, cmd, &p) < 0) | |
288 | return -1; | |
289 | ||
290 | if (p.iph.ttl && p.iph.frag_off == 0) { | |
30d07e9e | 291 | fprintf(stderr, "ttl != 0 and nopmtudisc are incompatible\n"); |
aba5acdf SH |
292 | return -1; |
293 | } | |
294 | ||
295 | switch (p.iph.protocol) { | |
296 | case IPPROTO_IPIP: | |
23d526c4 | 297 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 298 | return tnl_add_ioctl(cmd, "ip_vti0", p.name, &p); |
23d526c4 DP |
299 | else |
300 | return tnl_add_ioctl(cmd, "tunl0", p.name, &p); | |
aba5acdf | 301 | case IPPROTO_GRE: |
d9bd1bd9 | 302 | return tnl_add_ioctl(cmd, "gre0", p.name, &p); |
aba5acdf | 303 | case IPPROTO_IPV6: |
d9bd1bd9 | 304 | return tnl_add_ioctl(cmd, "sit0", p.name, &p); |
ae665a52 | 305 | default: |
eec47608 | 306 | fprintf(stderr, "cannot determine tunnel mode (ipip, gre, vti or sit)\n"); |
aba5acdf SH |
307 | return -1; |
308 | } | |
309 | return -1; | |
310 | } | |
311 | ||
d9bd1bd9 | 312 | static int do_del(int argc, char **argv) |
aba5acdf SH |
313 | { |
314 | struct ip_tunnel_parm p; | |
315 | ||
316 | if (parse_args(argc, argv, SIOCDELTUNNEL, &p) < 0) | |
317 | return -1; | |
318 | ||
319 | switch (p.iph.protocol) { | |
320 | case IPPROTO_IPIP: | |
23d526c4 | 321 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 322 | return tnl_del_ioctl("ip_vti0", p.name, &p); |
23d526c4 DP |
323 | else |
324 | return tnl_del_ioctl("tunl0", p.name, &p); | |
aba5acdf | 325 | case IPPROTO_GRE: |
d9bd1bd9 | 326 | return tnl_del_ioctl("gre0", p.name, &p); |
aba5acdf | 327 | case IPPROTO_IPV6: |
d9bd1bd9 | 328 | return tnl_del_ioctl("sit0", p.name, &p); |
ae665a52 | 329 | default: |
d9bd1bd9 | 330 | return tnl_del_ioctl(p.name, p.name, &p); |
aba5acdf SH |
331 | } |
332 | return -1; | |
333 | } | |
334 | ||
d9bd1bd9 | 335 | static void print_tunnel(struct ip_tunnel_parm *p) |
aba5acdf | 336 | { |
b88215c4 | 337 | struct ip_tunnel_6rd ip6rd; |
aba5acdf SH |
338 | char s1[1024]; |
339 | char s2[1024]; | |
aba5acdf | 340 | |
b88215c4 | 341 | memset(&ip6rd, 0, sizeof(ip6rd)); |
aba5acdf SH |
342 | |
343 | /* Do not use format_host() for local addr, | |
344 | * symbolic name will not be useful. | |
345 | */ | |
346 | printf("%s: %s/ip remote %s local %s ", | |
347 | p->name, | |
d9bd1bd9 | 348 | tnl_strproto(p->iph.protocol), |
8e8f8de4 | 349 | p->iph.daddr ? format_host(AF_INET, 4, &p->iph.daddr, s1, sizeof(s1)) : "any", |
26dcdf3a | 350 | p->iph.saddr ? rt_addr_n2a(AF_INET, 4, &p->iph.saddr, s2, sizeof(s2)) : "any"); |
aba5acdf | 351 | |
86c00faa | 352 | if (p->iph.protocol == IPPROTO_IPV6 && (p->i_flags & SIT_ISATAP)) { |
a07e9912 SH |
353 | struct ip_tunnel_prl prl[16]; |
354 | int i; | |
0612519e | 355 | |
a07e9912 SH |
356 | memset(prl, 0, sizeof(prl)); |
357 | prl[0].datalen = sizeof(prl) - sizeof(prl[0]); | |
358 | prl[0].addr = htonl(INADDR_ANY); | |
0612519e | 359 | |
a07e9912 SH |
360 | if (!tnl_prl_ioctl(SIOCGETPRL, p->name, prl)) |
361 | for (i = 1; i < sizeof(prl) / sizeof(prl[0]); i++) | |
362 | { | |
363 | if (prl[i].addr != htonl(INADDR_ANY)) { | |
0612519e | 364 | printf(" %s %s ", |
a07e9912 SH |
365 | (prl[i].flags & PRL_DEFAULT) ? "pdr" : "pr", |
366 | format_host(AF_INET, 4, &prl[i].addr, s1, sizeof(s1))); | |
367 | } | |
368 | } | |
369 | } | |
370 | ||
aba5acdf | 371 | if (p->link) { |
ea71beac | 372 | const char *n = ll_index_to_name(p->link); |
aba5acdf SH |
373 | if (n) |
374 | printf(" dev %s ", n); | |
375 | } | |
376 | ||
377 | if (p->iph.ttl) | |
378 | printf(" ttl %d ", p->iph.ttl); | |
379 | else | |
380 | printf(" ttl inherit "); | |
ae665a52 | 381 | |
aba5acdf SH |
382 | if (p->iph.tos) { |
383 | SPRINT_BUF(b1); | |
384 | printf(" tos"); | |
385 | if (p->iph.tos&1) | |
386 | printf(" inherit"); | |
387 | if (p->iph.tos&~1) | |
388 | printf("%c%s ", p->iph.tos&1 ? '/' : ' ', | |
389 | rtnl_dsfield_n2a(p->iph.tos&~1, b1, sizeof(b1))); | |
390 | } | |
391 | ||
392 | if (!(p->iph.frag_off&htons(IP_DF))) | |
393 | printf(" nopmtudisc"); | |
394 | ||
3979ef91 | 395 | if (p->iph.protocol == IPPROTO_IPV6 && !tnl_ioctl_get_6rd(p->name, &ip6rd) && ip6rd.prefixlen) { |
b88215c4 AC |
396 | printf(" 6rd-prefix %s/%u ", |
397 | inet_ntop(AF_INET6, &ip6rd.prefix, s1, sizeof(s1)), | |
398 | ip6rd.prefixlen); | |
399 | if (ip6rd.relay_prefix) { | |
400 | printf("6rd-relay_prefix %s/%u ", | |
401 | format_host(AF_INET, 4, &ip6rd.relay_prefix, s1, sizeof(s1)), | |
402 | ip6rd.relay_prefixlen); | |
403 | } | |
404 | } | |
405 | ||
aba5acdf | 406 | if ((p->i_flags&GRE_KEY) && (p->o_flags&GRE_KEY) && p->o_key == p->i_key) |
6f4f7c46 | 407 | printf(" key %u", ntohl(p->i_key)); |
aba5acdf SH |
408 | else if ((p->i_flags|p->o_flags)&GRE_KEY) { |
409 | if (p->i_flags&GRE_KEY) | |
6f4f7c46 | 410 | printf(" ikey %u ", ntohl(p->i_key)); |
aba5acdf | 411 | if (p->o_flags&GRE_KEY) |
6f4f7c46 | 412 | printf(" okey %u ", ntohl(p->o_key)); |
aba5acdf SH |
413 | } |
414 | ||
415 | if (p->i_flags&GRE_SEQ) | |
4cb8d030 | 416 | printf("%s Drop packets out of sequence.", _SL_); |
aba5acdf SH |
417 | if (p->i_flags&GRE_CSUM) |
418 | printf("%s Checksum in received packet is required.", _SL_); | |
419 | if (p->o_flags&GRE_SEQ) | |
420 | printf("%s Sequence packets on output.", _SL_); | |
421 | if (p->o_flags&GRE_CSUM) | |
422 | printf("%s Checksum output packets.", _SL_); | |
423 | } | |
424 | ||
425 | static int do_tunnels_list(struct ip_tunnel_parm *p) | |
426 | { | |
427 | char name[IFNAMSIZ]; | |
428 | unsigned long rx_bytes, rx_packets, rx_errs, rx_drops, | |
429 | rx_fifo, rx_frame, | |
430 | tx_bytes, tx_packets, tx_errs, tx_drops, | |
431 | tx_fifo, tx_colls, tx_carrier, rx_multi; | |
aba5acdf SH |
432 | struct ip_tunnel_parm p1; |
433 | ||
434 | char buf[512]; | |
435 | FILE *fp = fopen("/proc/net/dev", "r"); | |
436 | if (fp == NULL) { | |
437 | perror("fopen"); | |
438 | return -1; | |
439 | } | |
440 | ||
38c867d2 SH |
441 | /* skip header lines */ |
442 | if (!fgets(buf, sizeof(buf), fp) || | |
443 | !fgets(buf, sizeof(buf), fp)) { | |
444 | fprintf(stderr, "/proc/net/dev read error\n"); | |
297452a1 | 445 | fclose(fp); |
38c867d2 SH |
446 | return -1; |
447 | } | |
aba5acdf SH |
448 | |
449 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
ea71beac | 450 | int index, type; |
aba5acdf SH |
451 | char *ptr; |
452 | buf[sizeof(buf) - 1] = 0; | |
453 | if ((ptr = strchr(buf, ':')) == NULL || | |
454 | (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { | |
14645ec2 | 455 | fprintf(stderr, "Wrong format for /proc/net/dev. Giving up.\n"); |
297452a1 | 456 | fclose(fp); |
aba5acdf SH |
457 | return -1; |
458 | } | |
459 | if (sscanf(ptr, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld", | |
460 | &rx_bytes, &rx_packets, &rx_errs, &rx_drops, | |
461 | &rx_fifo, &rx_frame, &rx_multi, | |
462 | &tx_bytes, &tx_packets, &tx_errs, &tx_drops, | |
463 | &tx_fifo, &tx_colls, &tx_carrier) != 14) | |
464 | continue; | |
465 | if (p->name[0] && strcmp(p->name, name)) | |
466 | continue; | |
ea71beac SH |
467 | index = ll_name_to_index(name); |
468 | if (index == 0) | |
469 | continue; | |
470 | type = ll_index_to_type(index); | |
aba5acdf | 471 | if (type == -1) { |
14645ec2 | 472 | fprintf(stderr, "Failed to get type of \"%s\"\n", name); |
aba5acdf SH |
473 | continue; |
474 | } | |
475 | if (type != ARPHRD_TUNNEL && type != ARPHRD_IPGRE && type != ARPHRD_SIT) | |
476 | continue; | |
477 | memset(&p1, 0, sizeof(p1)); | |
d9bd1bd9 | 478 | if (tnl_get_ioctl(name, &p1)) |
aba5acdf SH |
479 | continue; |
480 | if ((p->link && p1.link != p->link) || | |
481 | (p->name[0] && strcmp(p1.name, p->name)) || | |
482 | (p->iph.daddr && p1.iph.daddr != p->iph.daddr) || | |
483 | (p->iph.saddr && p1.iph.saddr != p->iph.saddr) || | |
484 | (p->i_key && p1.i_key != p->i_key)) | |
485 | continue; | |
486 | print_tunnel(&p1); | |
487 | if (show_stats) { | |
488 | printf("%s", _SL_); | |
489 | printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_); | |
490 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s", | |
491 | rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_); | |
492 | printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_); | |
493 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld", | |
494 | tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops); | |
495 | } | |
496 | printf("\n"); | |
497 | } | |
297452a1 | 498 | fclose(fp); |
aba5acdf SH |
499 | return 0; |
500 | } | |
501 | ||
502 | static int do_show(int argc, char **argv) | |
503 | { | |
504 | int err; | |
505 | struct ip_tunnel_parm p; | |
506 | ||
ea71beac | 507 | ll_init_map(&rth); |
aba5acdf SH |
508 | if (parse_args(argc, argv, SIOCGETTUNNEL, &p) < 0) |
509 | return -1; | |
510 | ||
511 | switch (p.iph.protocol) { | |
ae665a52 | 512 | case IPPROTO_IPIP: |
23d526c4 | 513 | if (p.i_flags & VTI_ISVTI) |
eec47608 | 514 | err = tnl_get_ioctl(p.name[0] ? p.name : "ip_vti0", &p); |
23d526c4 DP |
515 | else |
516 | err = tnl_get_ioctl(p.name[0] ? p.name : "tunl0", &p); | |
aba5acdf SH |
517 | break; |
518 | case IPPROTO_GRE: | |
d9bd1bd9 | 519 | err = tnl_get_ioctl(p.name[0] ? p.name : "gre0", &p); |
aba5acdf SH |
520 | break; |
521 | case IPPROTO_IPV6: | |
d9bd1bd9 | 522 | err = tnl_get_ioctl(p.name[0] ? p.name : "sit0", &p); |
aba5acdf SH |
523 | break; |
524 | default: | |
525 | do_tunnels_list(&p); | |
526 | return 0; | |
527 | } | |
528 | if (err) | |
529 | return -1; | |
530 | ||
531 | print_tunnel(&p); | |
532 | printf("\n"); | |
533 | return 0; | |
534 | } | |
535 | ||
a07e9912 SH |
536 | static int do_prl(int argc, char **argv) |
537 | { | |
538 | struct ip_tunnel_prl p; | |
539 | int count = 0; | |
540 | int devname = 0; | |
541 | int cmd = 0; | |
542 | char medium[IFNAMSIZ]; | |
543 | ||
544 | memset(&p, 0, sizeof(p)); | |
545 | memset(&medium, 0, sizeof(medium)); | |
546 | ||
547 | while (argc > 0) { | |
548 | if (strcmp(*argv, "prl-default") == 0) { | |
549 | NEXT_ARG(); | |
550 | cmd = SIOCADDPRL; | |
551 | p.addr = get_addr32(*argv); | |
552 | p.flags |= PRL_DEFAULT; | |
553 | count++; | |
554 | } else if (strcmp(*argv, "prl-nodefault") == 0) { | |
555 | NEXT_ARG(); | |
556 | cmd = SIOCADDPRL; | |
557 | p.addr = get_addr32(*argv); | |
558 | count++; | |
559 | } else if (strcmp(*argv, "prl-delete") == 0) { | |
560 | NEXT_ARG(); | |
561 | cmd = SIOCDELPRL; | |
562 | p.addr = get_addr32(*argv); | |
563 | count++; | |
564 | } else if (strcmp(*argv, "dev") == 0) { | |
565 | NEXT_ARG(); | |
566 | strncpy(medium, *argv, IFNAMSIZ-1); | |
567 | devname++; | |
568 | } else { | |
14645ec2 | 569 | fprintf(stderr,"Invalid PRL parameter \"%s\"\n", *argv); |
a07e9912 SH |
570 | exit(-1); |
571 | } | |
572 | if (count > 1) { | |
14645ec2 | 573 | fprintf(stderr,"One PRL entry at a time\n"); |
a07e9912 SH |
574 | exit(-1); |
575 | } | |
576 | argc--; argv++; | |
577 | } | |
578 | if (devname == 0) { | |
14645ec2 | 579 | fprintf(stderr, "Must specify device\n"); |
a07e9912 SH |
580 | exit(-1); |
581 | } | |
582 | ||
583 | return tnl_prl_ioctl(cmd, medium, &p); | |
584 | } | |
585 | ||
b88215c4 AC |
586 | static int do_6rd(int argc, char **argv) |
587 | { | |
588 | struct ip_tunnel_6rd ip6rd; | |
589 | int devname = 0; | |
590 | int cmd = 0; | |
591 | char medium[IFNAMSIZ]; | |
592 | inet_prefix prefix; | |
593 | ||
594 | memset(&ip6rd, 0, sizeof(ip6rd)); | |
595 | memset(&medium, 0, sizeof(medium)); | |
596 | ||
597 | while (argc > 0) { | |
598 | if (strcmp(*argv, "6rd-prefix") == 0) { | |
599 | NEXT_ARG(); | |
600 | if (get_prefix(&prefix, *argv, AF_INET6)) | |
601 | invarg("invalid 6rd_prefix\n", *argv); | |
602 | cmd = SIOCADD6RD; | |
603 | memcpy(&ip6rd.prefix, prefix.data, 16); | |
604 | ip6rd.prefixlen = prefix.bitlen; | |
605 | } else if (strcmp(*argv, "6rd-relay_prefix") == 0) { | |
606 | NEXT_ARG(); | |
607 | if (get_prefix(&prefix, *argv, AF_INET)) | |
608 | invarg("invalid 6rd-relay_prefix\n", *argv); | |
609 | cmd = SIOCADD6RD; | |
610 | memcpy(&ip6rd.relay_prefix, prefix.data, 4); | |
611 | ip6rd.relay_prefixlen = prefix.bitlen; | |
612 | } else if (strcmp(*argv, "6rd-reset") == 0) { | |
613 | cmd = SIOCDEL6RD; | |
614 | } else if (strcmp(*argv, "dev") == 0) { | |
615 | NEXT_ARG(); | |
616 | strncpy(medium, *argv, IFNAMSIZ-1); | |
617 | devname++; | |
618 | } else { | |
14645ec2 | 619 | fprintf(stderr,"Invalid 6RD parameter \"%s\"\n", *argv); |
b88215c4 AC |
620 | exit(-1); |
621 | } | |
622 | argc--; argv++; | |
623 | } | |
624 | if (devname == 0) { | |
14645ec2 | 625 | fprintf(stderr, "Must specify device\n"); |
b88215c4 AC |
626 | exit(-1); |
627 | } | |
628 | ||
629 | return tnl_6rd_ioctl(cmd, medium, &ip6rd); | |
630 | } | |
631 | ||
aba5acdf SH |
632 | int do_iptunnel(int argc, char **argv) |
633 | { | |
d9bd1bd9 MN |
634 | switch (preferred_family) { |
635 | case AF_UNSPEC: | |
636 | preferred_family = AF_INET; | |
637 | break; | |
638 | case AF_INET: | |
639 | break; | |
288384f2 MN |
640 | /* |
641 | * This is silly enough but we have no easy way to make it | |
642 | * protocol-independent because of unarranged structure between | |
643 | * IPv4 and IPv6. | |
644 | */ | |
645 | case AF_INET6: | |
646 | return do_ip6tunnel(argc, argv); | |
d9bd1bd9 | 647 | default: |
14645ec2 | 648 | fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family); |
d9bd1bd9 MN |
649 | exit(-1); |
650 | } | |
651 | ||
aba5acdf SH |
652 | if (argc > 0) { |
653 | if (matches(*argv, "add") == 0) | |
654 | return do_add(SIOCADDTUNNEL, argc-1, argv+1); | |
655 | if (matches(*argv, "change") == 0) | |
656 | return do_add(SIOCCHGTUNNEL, argc-1, argv+1); | |
6e30461e | 657 | if (matches(*argv, "delete") == 0) |
aba5acdf SH |
658 | return do_del(argc-1, argv+1); |
659 | if (matches(*argv, "show") == 0 || | |
660 | matches(*argv, "lst") == 0 || | |
661 | matches(*argv, "list") == 0) | |
662 | return do_show(argc-1, argv+1); | |
a07e9912 SH |
663 | if (matches(*argv, "prl") == 0) |
664 | return do_prl(argc-1, argv+1); | |
b88215c4 AC |
665 | if (matches(*argv, "6rd") == 0) |
666 | return do_6rd(argc-1, argv+1); | |
aba5acdf SH |
667 | if (matches(*argv, "help") == 0) |
668 | usage(); | |
669 | } else | |
670 | return do_show(0, NULL); | |
671 | ||
14645ec2 | 672 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip tunnel help\"\n", *argv); |
aba5acdf SH |
673 | exit(-1); |
674 | } |