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Commit | Line | Data |
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9447a0d3 MN |
1 | /* |
2 | * Copyright (C)2006 USAGI/WIDE Project | |
ae665a52 | 3 | * |
9447a0d3 MN |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
ae665a52 | 8 | * |
9447a0d3 MN |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
ae665a52 | 13 | * |
9447a0d3 MN |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
9447a0d3 MN |
18 | /* |
19 | * Author: | |
20 | * Masahide NAKAMURA @USAGI | |
21 | */ | |
ae665a52 | 22 | |
9447a0d3 MN |
23 | #include <stdio.h> |
24 | #include <string.h> | |
25 | #include <stdlib.h> | |
9447a0d3 | 26 | #include <unistd.h> |
288384f2 MN |
27 | #include <sys/types.h> |
28 | #include <sys/socket.h> | |
9447a0d3 | 29 | #include <arpa/inet.h> |
288384f2 | 30 | #include <sys/ioctl.h> |
9447a0d3 | 31 | #include <linux/ip.h> |
288384f2 MN |
32 | #include <linux/if.h> |
33 | #include <linux/if_arp.h> | |
9447a0d3 | 34 | #include <linux/if_tunnel.h> |
288384f2 | 35 | #include <linux/ip6_tunnel.h> |
9447a0d3 | 36 | |
288384f2 MN |
37 | #include "utils.h" |
38 | #include "tunnel.h" | |
ea71beac | 39 | #include "ip_common.h" |
9447a0d3 | 40 | |
288384f2 MN |
41 | #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000) |
42 | #define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF) | |
9447a0d3 | 43 | |
288384f2 MN |
44 | #define DEFAULT_TNL_HOP_LIMIT (64) |
45 | ||
46 | static void usage(void) __attribute__((noreturn)); | |
9447a0d3 MN |
47 | |
48 | static void usage(void) | |
49 | { | |
288384f2 | 50 | fprintf(stderr, "Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]\n"); |
0b959b0f | 51 | fprintf(stderr, " [ mode { ip6ip6 | ipip6 | any } ]\n"); |
288384f2 MN |
52 | fprintf(stderr, " [ remote ADDR local ADDR ] [ dev PHYS_DEV ]\n"); |
53 | fprintf(stderr, " [ encaplimit ELIM ]\n"); | |
eddde110 | 54 | fprintf(stderr ," [ hoplimit TTL ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n"); |
288384f2 MN |
55 | fprintf(stderr, " [ dscp inherit ]\n"); |
56 | fprintf(stderr, "\n"); | |
eddde110 YH |
57 | fprintf(stderr, "Where: NAME := STRING\n"); |
58 | fprintf(stderr, " ADDR := IPV6_ADDRESS\n"); | |
59 | fprintf(stderr, " ELIM := { none | 0..255 }(default=%d)\n", | |
288384f2 | 60 | IPV6_DEFAULT_TNL_ENCAP_LIMIT); |
eddde110 | 61 | fprintf(stderr, " TTL := 0..255 (default=%d)\n", |
288384f2 | 62 | DEFAULT_TNL_HOP_LIMIT); |
eddde110 YH |
63 | fprintf(stderr, " TOS := { 0x0..0xff | inherit }\n"); |
64 | fprintf(stderr, " FLOWLABEL := { 0x0..0xfffff | inherit }\n"); | |
9447a0d3 MN |
65 | exit(-1); |
66 | } | |
67 | ||
288384f2 | 68 | static void print_tunnel(struct ip6_tnl_parm *p) |
9447a0d3 MN |
69 | { |
70 | char remote[64]; | |
71 | char local[64]; | |
ae665a52 | 72 | |
9447a0d3 MN |
73 | inet_ntop(AF_INET6, &p->raddr, remote, sizeof(remote)); |
74 | inet_ntop(AF_INET6, &p->laddr, local, sizeof(local)); | |
75 | ||
288384f2 MN |
76 | printf("%s: %s/ipv6 remote %s local %s", |
77 | p->name, tnl_strproto(p->proto), remote, local); | |
9447a0d3 | 78 | if (p->link) { |
ea71beac | 79 | const char *n = ll_index_to_name(p->link); |
9447a0d3 MN |
80 | if (n) |
81 | printf(" dev %s", n); | |
82 | } | |
9447a0d3 | 83 | |
288384f2 MN |
84 | if (p->flags & IP6_TNL_F_IGN_ENCAP_LIMIT) |
85 | printf(" encaplimit none"); | |
86 | else | |
87 | printf(" encaplimit %u", p->encap_limit); | |
9447a0d3 | 88 | |
288384f2 | 89 | printf(" hoplimit %u", p->hop_limit); |
9447a0d3 | 90 | |
288384f2 | 91 | if (p->flags & IP6_TNL_F_USE_ORIG_TCLASS) |
eddde110 | 92 | printf(" tclass inherit"); |
288384f2 MN |
93 | else { |
94 | __u32 val = ntohl(p->flowinfo & IP6_FLOWINFO_TCLASS); | |
eddde110 | 95 | printf(" tclass 0x%02x", (__u8)(val >> 20)); |
9447a0d3 | 96 | } |
9447a0d3 | 97 | |
288384f2 | 98 | if (p->flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) |
eddde110 | 99 | printf(" flowlabel inherit"); |
288384f2 | 100 | else |
eddde110 | 101 | printf(" flowlabel 0x%05x", ntohl(p->flowinfo & IP6_FLOWINFO_FLOWLABEL)); |
9447a0d3 | 102 | |
288384f2 | 103 | printf(" (flowinfo 0x%08x)", ntohl(p->flowinfo)); |
9447a0d3 | 104 | |
288384f2 MN |
105 | if (p->flags & IP6_TNL_F_RCV_DSCP_COPY) |
106 | printf(" dscp inherit"); | |
9447a0d3 MN |
107 | } |
108 | ||
288384f2 | 109 | static int parse_args(int argc, char **argv, struct ip6_tnl_parm *p) |
9447a0d3 MN |
110 | { |
111 | char medium[IFNAMSIZ]; | |
112 | ||
288384f2 | 113 | memset(medium, 0, sizeof(medium)); |
9447a0d3 MN |
114 | |
115 | while (argc > 0) { | |
0b959b0f YH |
116 | if (strcmp(*argv, "mode") == 0) { |
117 | NEXT_ARG(); | |
118 | if (strcmp(*argv, "ipv6/ipv6") == 0 || | |
119 | strcmp(*argv, "ip6ip6") == 0) | |
120 | p->proto = IPPROTO_IPV6; | |
121 | else if (strcmp(*argv, "ip/ipv6") == 0 || | |
122 | strcmp(*argv, "ipv4/ipv6") == 0 || | |
123 | strcmp(*argv, "ipip6") == 0 || | |
124 | strcmp(*argv, "ip4ip6") == 0) | |
125 | p->proto = IPPROTO_IPIP; | |
126 | else if (strcmp(*argv, "any/ipv6") == 0 || | |
127 | strcmp(*argv, "any") == 0) | |
128 | p->proto = 0; | |
129 | else { | |
130 | fprintf(stderr,"Cannot guess tunnel mode.\n"); | |
131 | exit(-1); | |
132 | } | |
133 | } else if (strcmp(*argv, "remote") == 0) { | |
288384f2 MN |
134 | inet_prefix raddr; |
135 | NEXT_ARG(); | |
136 | get_prefix(&raddr, *argv, preferred_family); | |
137 | if (raddr.family == AF_UNSPEC) | |
138 | invarg("\"remote\" address family is AF_UNSPEC", *argv); | |
139 | memcpy(&p->raddr, &raddr.data, sizeof(p->raddr)); | |
140 | } else if (strcmp(*argv, "local") == 0) { | |
141 | inet_prefix laddr; | |
142 | NEXT_ARG(); | |
143 | get_prefix(&laddr, *argv, preferred_family); | |
144 | if (laddr.family == AF_UNSPEC) | |
145 | invarg("\"local\" address family is AF_UNSPEC", *argv); | |
146 | memcpy(&p->laddr, &laddr.data, sizeof(p->laddr)); | |
147 | } else if (strcmp(*argv, "dev") == 0) { | |
148 | NEXT_ARG(); | |
9447a0d3 | 149 | strncpy(medium, *argv, IFNAMSIZ - 1); |
288384f2 MN |
150 | } else if (strcmp(*argv, "encaplimit") == 0) { |
151 | NEXT_ARG(); | |
152 | if (strcmp(*argv, "none") == 0) { | |
153 | p->flags |= IP6_TNL_F_IGN_ENCAP_LIMIT; | |
9447a0d3 MN |
154 | } else { |
155 | __u8 uval; | |
288384f2 MN |
156 | if (get_u8(&uval, *argv, 0) < -1) |
157 | invarg("invalid ELIM", *argv); | |
9447a0d3 MN |
158 | p->encap_limit = uval; |
159 | } | |
eddde110 YH |
160 | } else if (strcmp(*argv, "hoplimit") == 0 || |
161 | strcmp(*argv, "ttl") == 0 || | |
162 | strcmp(*argv, "hlim") == 0) { | |
288384f2 MN |
163 | __u8 uval; |
164 | NEXT_ARG(); | |
165 | if (get_u8(&uval, *argv, 0)) | |
eddde110 | 166 | invarg("invalid TTL", *argv); |
288384f2 | 167 | p->hop_limit = uval; |
eddde110 YH |
168 | } else if (strcmp(*argv, "tclass") == 0 || |
169 | strcmp(*argv, "tc") == 0 || | |
170 | strcmp(*argv, "tos") == 0 || | |
171 | matches(*argv, "dsfield") == 0) { | |
288384f2 MN |
172 | __u8 uval; |
173 | NEXT_ARG(); | |
174 | if (strcmp(*argv, "inherit") == 0) | |
175 | p->flags |= IP6_TNL_F_USE_ORIG_TCLASS; | |
176 | else { | |
177 | if (get_u8(&uval, *argv, 16)) | |
eddde110 | 178 | invarg("invalid TClass", *argv); |
288384f2 MN |
179 | p->flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS; |
180 | p->flags &= ~IP6_TNL_F_USE_ORIG_TCLASS; | |
181 | } | |
eddde110 YH |
182 | } else if (strcmp(*argv, "flowlabel") == 0 || |
183 | strcmp(*argv, "fl") == 0) { | |
288384f2 MN |
184 | __u32 uval; |
185 | NEXT_ARG(); | |
186 | if (strcmp(*argv, "inherit") == 0) | |
187 | p->flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
188 | else { | |
189 | if (get_u32(&uval, *argv, 16)) | |
eddde110 | 190 | invarg("invalid Flowlabel", *argv); |
288384f2 | 191 | if (uval > 0xFFFFF) |
eddde110 | 192 | invarg("invalid Flowlabel", *argv); |
288384f2 MN |
193 | p->flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL; |
194 | p->flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
195 | } | |
196 | } else if (strcmp(*argv, "dscp") == 0) { | |
197 | NEXT_ARG(); | |
198 | if (strcmp(*argv, "inherit") != 0) | |
199 | invarg("not inherit", *argv); | |
200 | p->flags |= IP6_TNL_F_RCV_DSCP_COPY; | |
9447a0d3 | 201 | } else { |
288384f2 MN |
202 | if (strcmp(*argv, "name") == 0) { |
203 | NEXT_ARG(); | |
204 | } | |
205 | if (matches(*argv, "help") == 0) | |
9447a0d3 | 206 | usage(); |
288384f2 MN |
207 | if (p->name[0]) |
208 | duparg2("name", *argv); | |
9447a0d3 MN |
209 | strncpy(p->name, *argv, IFNAMSIZ - 1); |
210 | } | |
211 | argc--; argv++; | |
212 | } | |
213 | if (medium[0]) { | |
ea71beac | 214 | p->link = ll_name_to_index(medium); |
9447a0d3 MN |
215 | if (p->link == 0) |
216 | return -1; | |
217 | } | |
218 | return 0; | |
219 | } | |
220 | ||
288384f2 MN |
221 | static void ip6_tnl_parm_init(struct ip6_tnl_parm *p, int apply_default) |
222 | { | |
223 | memset(p, 0, sizeof(*p)); | |
224 | p->proto = IPPROTO_IPV6; | |
225 | if (apply_default) { | |
226 | p->hop_limit = DEFAULT_TNL_HOP_LIMIT; | |
227 | p->encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT; | |
228 | } | |
229 | } | |
230 | ||
231 | /* | |
232 | * @p1: user specified parameter | |
233 | * @p2: database entry | |
234 | */ | |
235 | static int ip6_tnl_parm_match(const struct ip6_tnl_parm *p1, | |
236 | const struct ip6_tnl_parm *p2) | |
237 | { | |
238 | return ((!p1->link || p1->link == p2->link) && | |
239 | (!p1->name[0] || strcmp(p1->name, p2->name) == 0) && | |
240 | (memcmp(&p1->laddr, &in6addr_any, sizeof(p1->laddr)) == 0 || | |
241 | memcmp(&p1->laddr, &p2->laddr, sizeof(p1->laddr)) == 0) && | |
242 | (memcmp(&p1->raddr, &in6addr_any, sizeof(p1->raddr)) == 0 || | |
243 | memcmp(&p1->raddr, &p2->raddr, sizeof(p1->raddr)) == 0) && | |
244 | (!p1->proto || !p2->proto || p1->proto == p2->proto) && | |
245 | (!p1->encap_limit || p1->encap_limit == p2->encap_limit) && | |
246 | (!p1->hop_limit || p1->hop_limit == p2->hop_limit) && | |
247 | (!(p1->flowinfo & IP6_FLOWINFO_TCLASS) || | |
248 | !((p1->flowinfo ^ p2->flowinfo) & IP6_FLOWINFO_TCLASS)) && | |
249 | (!(p1->flowinfo & IP6_FLOWINFO_FLOWLABEL) || | |
250 | !((p1->flowinfo ^ p2->flowinfo) & IP6_FLOWINFO_FLOWLABEL)) && | |
251 | (!p1->flags || (p1->flags & p2->flags))); | |
252 | } | |
253 | ||
254 | static int do_tunnels_list(struct ip6_tnl_parm *p) | |
255 | { | |
256 | char buf[512]; | |
257 | int err = -1; | |
258 | FILE *fp = fopen("/proc/net/dev", "r"); | |
259 | if (fp == NULL) { | |
260 | perror("fopen"); | |
261 | goto end; | |
262 | } | |
263 | ||
264 | /* skip two lines at the begenning of the file */ | |
38c867d2 SH |
265 | if (!fgets(buf, sizeof(buf), fp) || |
266 | !fgets(buf, sizeof(buf), fp)) { | |
267 | fprintf(stderr, "/proc/net/dev read error\n"); | |
268 | return -1; | |
269 | } | |
288384f2 MN |
270 | |
271 | while (fgets(buf, sizeof(buf), fp) != NULL) { | |
272 | char name[IFNAMSIZ]; | |
ea71beac | 273 | int index, type; |
288384f2 MN |
274 | unsigned long rx_bytes, rx_packets, rx_errs, rx_drops, |
275 | rx_fifo, rx_frame, | |
276 | tx_bytes, tx_packets, tx_errs, tx_drops, | |
277 | tx_fifo, tx_colls, tx_carrier, rx_multi; | |
278 | struct ip6_tnl_parm p1; | |
279 | char *ptr; | |
280 | ||
281 | buf[sizeof(buf) - 1] = '\0'; | |
282 | if ((ptr = strchr(buf, ':')) == NULL || | |
283 | (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) { | |
284 | fprintf(stderr, "Wrong format of /proc/net/dev. Sorry.\n"); | |
285 | goto end; | |
286 | } | |
287 | if (sscanf(ptr, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld", | |
288 | &rx_bytes, &rx_packets, &rx_errs, &rx_drops, | |
289 | &rx_fifo, &rx_frame, &rx_multi, | |
290 | &tx_bytes, &tx_packets, &tx_errs, &tx_drops, | |
291 | &tx_fifo, &tx_colls, &tx_carrier) != 14) | |
292 | continue; | |
293 | if (p->name[0] && strcmp(p->name, name)) | |
294 | continue; | |
ea71beac SH |
295 | index = ll_name_to_index(name); |
296 | if (index == 0) | |
297 | continue; | |
298 | type = ll_index_to_type(index); | |
288384f2 MN |
299 | if (type == -1) { |
300 | fprintf(stderr, "Failed to get type of [%s]\n", name); | |
301 | continue; | |
302 | } | |
303 | if (type != ARPHRD_TUNNEL6) | |
304 | continue; | |
305 | memset(&p1, 0, sizeof(p1)); | |
306 | ip6_tnl_parm_init(&p1, 0); | |
307 | strcpy(p1.name, name); | |
ea71beac | 308 | p1.link = ll_name_to_index(p1.name); |
288384f2 MN |
309 | if (p1.link == 0) |
310 | continue; | |
311 | if (tnl_get_ioctl(p1.name, &p1)) | |
312 | continue; | |
313 | if (!ip6_tnl_parm_match(p, &p1)) | |
314 | continue; | |
315 | print_tunnel(&p1); | |
316 | if (show_stats) { | |
317 | printf("%s", _SL_); | |
318 | printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_); | |
319 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s", | |
320 | rx_packets, rx_bytes, rx_errs, rx_frame, rx_fifo, rx_multi, _SL_); | |
321 | printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_); | |
322 | printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld", | |
323 | tx_packets, tx_bytes, tx_errs, tx_colls, tx_carrier, tx_drops); | |
324 | } | |
325 | printf("\n"); | |
326 | } | |
327 | err = 0; | |
328 | ||
329 | end: | |
330 | if (fp) | |
331 | fclose(fp); | |
332 | return err; | |
333 | } | |
334 | ||
9447a0d3 MN |
335 | static int do_show(int argc, char **argv) |
336 | { | |
288384f2 MN |
337 | struct ip6_tnl_parm p; |
338 | ||
ea71beac | 339 | ll_init_map(&rth); |
288384f2 | 340 | ip6_tnl_parm_init(&p, 0); |
c3651bf4 | 341 | p.proto = 0; /* default to any */ |
9447a0d3 MN |
342 | |
343 | if (parse_args(argc, argv, &p) < 0) | |
344 | return -1; | |
345 | ||
288384f2 MN |
346 | if (!p.name[0] || show_stats) |
347 | do_tunnels_list(&p); | |
348 | else { | |
349 | if (tnl_get_ioctl(p.name, &p)) | |
350 | return -1; | |
351 | print_tunnel(&p); | |
352 | printf("\n"); | |
353 | } | |
9447a0d3 | 354 | |
9447a0d3 MN |
355 | return 0; |
356 | } | |
357 | ||
9447a0d3 MN |
358 | static int do_add(int cmd, int argc, char **argv) |
359 | { | |
288384f2 MN |
360 | struct ip6_tnl_parm p; |
361 | ||
362 | ip6_tnl_parm_init(&p, 1); | |
9447a0d3 MN |
363 | |
364 | if (parse_args(argc, argv, &p) < 0) | |
365 | return -1; | |
288384f2 MN |
366 | |
367 | return tnl_add_ioctl(cmd, | |
368 | cmd == SIOCCHGTUNNEL && p.name[0] ? | |
369 | p.name : "ip6tnl0", p.name, &p); | |
9447a0d3 MN |
370 | } |
371 | ||
288384f2 | 372 | static int do_del(int argc, char **argv) |
9447a0d3 | 373 | { |
288384f2 MN |
374 | struct ip6_tnl_parm p; |
375 | ||
376 | ip6_tnl_parm_init(&p, 1); | |
9447a0d3 MN |
377 | |
378 | if (parse_args(argc, argv, &p) < 0) | |
379 | return -1; | |
380 | ||
288384f2 | 381 | return tnl_del_ioctl(p.name[0] ? p.name : "ip6tnl0", p.name, &p); |
9447a0d3 MN |
382 | } |
383 | ||
ae665a52 SH |
384 | int do_ip6tunnel(int argc, char **argv) |
385 | { | |
288384f2 MN |
386 | switch (preferred_family) { |
387 | case AF_UNSPEC: | |
388 | preferred_family = AF_INET6; | |
389 | break; | |
390 | case AF_INET6: | |
391 | break; | |
392 | default: | |
393 | fprintf(stderr, "Unsupported family:%d\n", preferred_family); | |
394 | exit(-1); | |
395 | } | |
396 | ||
9447a0d3 | 397 | if (argc > 0) { |
288384f2 | 398 | if (matches(*argv, "add") == 0) |
9447a0d3 | 399 | return do_add(SIOCADDTUNNEL, argc - 1, argv + 1); |
288384f2 | 400 | if (matches(*argv, "change") == 0) |
9447a0d3 | 401 | return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1); |
288384f2 | 402 | if (matches(*argv, "del") == 0) |
9447a0d3 | 403 | return do_del(argc - 1, argv + 1); |
288384f2 MN |
404 | if (matches(*argv, "show") == 0 || |
405 | matches(*argv, "lst") == 0 || | |
406 | matches(*argv, "list") == 0) | |
9447a0d3 | 407 | return do_show(argc - 1, argv + 1); |
288384f2 | 408 | if (matches(*argv, "help") == 0) |
9447a0d3 | 409 | usage(); |
9447a0d3 MN |
410 | } else |
411 | return do_show(0, NULL); | |
412 | ||
288384f2 MN |
413 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip -f inet6 tunnel help\".\n", *argv); |
414 | exit(-1); | |
9447a0d3 | 415 | } |