2 * Copyright (C)2006 USAGI/WIDE Project
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.
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.
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
20 * Masahide NAKAMURA @USAGI
27 #include <sys/types.h>
28 #include <sys/socket.h>
29 #include <arpa/inet.h>
30 #include <sys/ioctl.h>
33 #include <linux/if_arp.h>
34 #include <linux/if_tunnel.h>
35 #include <linux/ip6_tunnel.h>
40 #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000)
41 #define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF)
43 #define DEFAULT_TNL_HOP_LIMIT (64)
45 static void usage(void) __attribute__((noreturn
));
47 static void usage(void)
49 fprintf(stderr
, "Usage: ip -f inet6 tunnel { add | change | del | show } [ NAME ]\n");
50 fprintf(stderr
, " [ mode { ip6ip6 | ipip6 | any } ]\n");
51 fprintf(stderr
, " [ remote ADDR local ADDR ] [ dev PHYS_DEV ]\n");
52 fprintf(stderr
, " [ encaplimit ELIM ]\n");
53 fprintf(stderr
," [ hoplimit TTL ] [ tclass TCLASS ] [ flowlabel FLOWLABEL ]\n");
54 fprintf(stderr
, " [ dscp inherit ]\n");
55 fprintf(stderr
, "\n");
56 fprintf(stderr
, "Where: NAME := STRING\n");
57 fprintf(stderr
, " ADDR := IPV6_ADDRESS\n");
58 fprintf(stderr
, " ELIM := { none | 0..255 }(default=%d)\n",
59 IPV6_DEFAULT_TNL_ENCAP_LIMIT
);
60 fprintf(stderr
, " TTL := 0..255 (default=%d)\n",
61 DEFAULT_TNL_HOP_LIMIT
);
62 fprintf(stderr
, " TOS := { 0x0..0xff | inherit }\n");
63 fprintf(stderr
, " FLOWLABEL := { 0x0..0xfffff | inherit }\n");
67 static void print_tunnel(struct ip6_tnl_parm
*p
)
72 inet_ntop(AF_INET6
, &p
->raddr
, remote
, sizeof(remote
));
73 inet_ntop(AF_INET6
, &p
->laddr
, local
, sizeof(local
));
75 printf("%s: %s/ipv6 remote %s local %s",
76 p
->name
, tnl_strproto(p
->proto
), remote
, local
);
78 char *n
= tnl_ioctl_get_ifname(p
->link
);
83 if (p
->flags
& IP6_TNL_F_IGN_ENCAP_LIMIT
)
84 printf(" encaplimit none");
86 printf(" encaplimit %u", p
->encap_limit
);
88 printf(" hoplimit %u", p
->hop_limit
);
90 if (p
->flags
& IP6_TNL_F_USE_ORIG_TCLASS
)
91 printf(" tclass inherit");
93 __u32 val
= ntohl(p
->flowinfo
& IP6_FLOWINFO_TCLASS
);
94 printf(" tclass 0x%02x", (__u8
)(val
>> 20));
97 if (p
->flags
& IP6_TNL_F_USE_ORIG_FLOWLABEL
)
98 printf(" flowlabel inherit");
100 printf(" flowlabel 0x%05x", ntohl(p
->flowinfo
& IP6_FLOWINFO_FLOWLABEL
));
102 printf(" (flowinfo 0x%08x)", ntohl(p
->flowinfo
));
104 if (p
->flags
& IP6_TNL_F_RCV_DSCP_COPY
)
105 printf(" dscp inherit");
108 static int parse_args(int argc
, char **argv
, struct ip6_tnl_parm
*p
)
110 char medium
[IFNAMSIZ
];
112 memset(medium
, 0, sizeof(medium
));
115 if (strcmp(*argv
, "mode") == 0) {
117 if (strcmp(*argv
, "ipv6/ipv6") == 0 ||
118 strcmp(*argv
, "ip6ip6") == 0)
119 p
->proto
= IPPROTO_IPV6
;
120 else if (strcmp(*argv
, "ip/ipv6") == 0 ||
121 strcmp(*argv
, "ipv4/ipv6") == 0 ||
122 strcmp(*argv
, "ipip6") == 0 ||
123 strcmp(*argv
, "ip4ip6") == 0)
124 p
->proto
= IPPROTO_IPIP
;
125 else if (strcmp(*argv
, "any/ipv6") == 0 ||
126 strcmp(*argv
, "any") == 0)
129 fprintf(stderr
,"Cannot guess tunnel mode.\n");
132 } else if (strcmp(*argv
, "remote") == 0) {
135 get_prefix(&raddr
, *argv
, preferred_family
);
136 if (raddr
.family
== AF_UNSPEC
)
137 invarg("\"remote\" address family is AF_UNSPEC", *argv
);
138 memcpy(&p
->raddr
, &raddr
.data
, sizeof(p
->raddr
));
139 } else if (strcmp(*argv
, "local") == 0) {
142 get_prefix(&laddr
, *argv
, preferred_family
);
143 if (laddr
.family
== AF_UNSPEC
)
144 invarg("\"local\" address family is AF_UNSPEC", *argv
);
145 memcpy(&p
->laddr
, &laddr
.data
, sizeof(p
->laddr
));
146 } else if (strcmp(*argv
, "dev") == 0) {
148 strncpy(medium
, *argv
, IFNAMSIZ
- 1);
149 } else if (strcmp(*argv
, "encaplimit") == 0) {
151 if (strcmp(*argv
, "none") == 0) {
152 p
->flags
|= IP6_TNL_F_IGN_ENCAP_LIMIT
;
155 if (get_u8(&uval
, *argv
, 0) < -1)
156 invarg("invalid ELIM", *argv
);
157 p
->encap_limit
= uval
;
159 } else if (strcmp(*argv
, "hoplimit") == 0 ||
160 strcmp(*argv
, "ttl") == 0 ||
161 strcmp(*argv
, "hlim") == 0) {
164 if (get_u8(&uval
, *argv
, 0))
165 invarg("invalid TTL", *argv
);
167 } else if (strcmp(*argv
, "tclass") == 0 ||
168 strcmp(*argv
, "tc") == 0 ||
169 strcmp(*argv
, "tos") == 0 ||
170 matches(*argv
, "dsfield") == 0) {
173 if (strcmp(*argv
, "inherit") == 0)
174 p
->flags
|= IP6_TNL_F_USE_ORIG_TCLASS
;
176 if (get_u8(&uval
, *argv
, 16))
177 invarg("invalid TClass", *argv
);
178 p
->flowinfo
|= htonl((__u32
)uval
<< 20) & IP6_FLOWINFO_TCLASS
;
179 p
->flags
&= ~IP6_TNL_F_USE_ORIG_TCLASS
;
181 } else if (strcmp(*argv
, "flowlabel") == 0 ||
182 strcmp(*argv
, "fl") == 0) {
185 if (strcmp(*argv
, "inherit") == 0)
186 p
->flags
|= IP6_TNL_F_USE_ORIG_FLOWLABEL
;
188 if (get_u32(&uval
, *argv
, 16))
189 invarg("invalid Flowlabel", *argv
);
191 invarg("invalid Flowlabel", *argv
);
192 p
->flowinfo
|= htonl(uval
) & IP6_FLOWINFO_FLOWLABEL
;
193 p
->flags
&= ~IP6_TNL_F_USE_ORIG_FLOWLABEL
;
195 } else if (strcmp(*argv
, "dscp") == 0) {
197 if (strcmp(*argv
, "inherit") != 0)
198 invarg("not inherit", *argv
);
199 p
->flags
|= IP6_TNL_F_RCV_DSCP_COPY
;
201 if (strcmp(*argv
, "name") == 0) {
204 if (matches(*argv
, "help") == 0)
207 duparg2("name", *argv
);
208 strncpy(p
->name
, *argv
, IFNAMSIZ
- 1);
213 p
->link
= tnl_ioctl_get_ifindex(medium
);
220 static void ip6_tnl_parm_init(struct ip6_tnl_parm
*p
, int apply_default
)
222 memset(p
, 0, sizeof(*p
));
223 p
->proto
= IPPROTO_IPV6
;
225 p
->hop_limit
= DEFAULT_TNL_HOP_LIMIT
;
226 p
->encap_limit
= IPV6_DEFAULT_TNL_ENCAP_LIMIT
;
231 * @p1: user specified parameter
232 * @p2: database entry
234 static int ip6_tnl_parm_match(const struct ip6_tnl_parm
*p1
,
235 const struct ip6_tnl_parm
*p2
)
237 return ((!p1
->link
|| p1
->link
== p2
->link
) &&
238 (!p1
->name
[0] || strcmp(p1
->name
, p2
->name
) == 0) &&
239 (memcmp(&p1
->laddr
, &in6addr_any
, sizeof(p1
->laddr
)) == 0 ||
240 memcmp(&p1
->laddr
, &p2
->laddr
, sizeof(p1
->laddr
)) == 0) &&
241 (memcmp(&p1
->raddr
, &in6addr_any
, sizeof(p1
->raddr
)) == 0 ||
242 memcmp(&p1
->raddr
, &p2
->raddr
, sizeof(p1
->raddr
)) == 0) &&
243 (!p1
->proto
|| !p2
->proto
|| p1
->proto
== p2
->proto
) &&
244 (!p1
->encap_limit
|| p1
->encap_limit
== p2
->encap_limit
) &&
245 (!p1
->hop_limit
|| p1
->hop_limit
== p2
->hop_limit
) &&
246 (!(p1
->flowinfo
& IP6_FLOWINFO_TCLASS
) ||
247 !((p1
->flowinfo
^ p2
->flowinfo
) & IP6_FLOWINFO_TCLASS
)) &&
248 (!(p1
->flowinfo
& IP6_FLOWINFO_FLOWLABEL
) ||
249 !((p1
->flowinfo
^ p2
->flowinfo
) & IP6_FLOWINFO_FLOWLABEL
)) &&
250 (!p1
->flags
|| (p1
->flags
& p2
->flags
)));
253 static int do_tunnels_list(struct ip6_tnl_parm
*p
)
257 FILE *fp
= fopen("/proc/net/dev", "r");
263 /* skip two lines at the begenning of the file */
264 fgets(buf
, sizeof(buf
), fp
);
265 fgets(buf
, sizeof(buf
), fp
);
267 while (fgets(buf
, sizeof(buf
), fp
) != NULL
) {
270 unsigned long rx_bytes
, rx_packets
, rx_errs
, rx_drops
,
272 tx_bytes
, tx_packets
, tx_errs
, tx_drops
,
273 tx_fifo
, tx_colls
, tx_carrier
, rx_multi
;
274 struct ip6_tnl_parm p1
;
277 buf
[sizeof(buf
) - 1] = '\0';
278 if ((ptr
= strchr(buf
, ':')) == NULL
||
279 (*ptr
++ = 0, sscanf(buf
, "%s", name
) != 1)) {
280 fprintf(stderr
, "Wrong format of /proc/net/dev. Sorry.\n");
283 if (sscanf(ptr
, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld",
284 &rx_bytes
, &rx_packets
, &rx_errs
, &rx_drops
,
285 &rx_fifo
, &rx_frame
, &rx_multi
,
286 &tx_bytes
, &tx_packets
, &tx_errs
, &tx_drops
,
287 &tx_fifo
, &tx_colls
, &tx_carrier
) != 14)
289 if (p
->name
[0] && strcmp(p
->name
, name
))
291 type
= tnl_ioctl_get_iftype(name
);
293 fprintf(stderr
, "Failed to get type of [%s]\n", name
);
296 if (type
!= ARPHRD_TUNNEL6
)
298 memset(&p1
, 0, sizeof(p1
));
299 ip6_tnl_parm_init(&p1
, 0);
300 strcpy(p1
.name
, name
);
301 p1
.link
= tnl_ioctl_get_ifindex(p1
.name
);
304 if (tnl_get_ioctl(p1
.name
, &p1
))
306 if (!ip6_tnl_parm_match(p
, &p1
))
311 printf("RX: Packets Bytes Errors CsumErrs OutOfSeq Mcasts%s", _SL_
);
312 printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-8ld%s",
313 rx_packets
, rx_bytes
, rx_errs
, rx_frame
, rx_fifo
, rx_multi
, _SL_
);
314 printf("TX: Packets Bytes Errors DeadLoop NoRoute NoBufs%s", _SL_
);
315 printf(" %-10ld %-12ld %-6ld %-8ld %-8ld %-6ld",
316 tx_packets
, tx_bytes
, tx_errs
, tx_colls
, tx_carrier
, tx_drops
);
328 static int do_show(int argc
, char **argv
)
330 struct ip6_tnl_parm p
;
332 ip6_tnl_parm_init(&p
, 0);
333 p
.proto
= 0; /* default to any */
335 if (parse_args(argc
, argv
, &p
) < 0)
338 if (!p
.name
[0] || show_stats
)
341 if (tnl_get_ioctl(p
.name
, &p
))
350 static int do_add(int cmd
, int argc
, char **argv
)
352 struct ip6_tnl_parm p
;
354 ip6_tnl_parm_init(&p
, 1);
356 if (parse_args(argc
, argv
, &p
) < 0)
359 return tnl_add_ioctl(cmd
,
360 cmd
== SIOCCHGTUNNEL
&& p
.name
[0] ?
361 p
.name
: "ip6tnl0", p
.name
, &p
);
364 static int do_del(int argc
, char **argv
)
366 struct ip6_tnl_parm p
;
368 ip6_tnl_parm_init(&p
, 1);
370 if (parse_args(argc
, argv
, &p
) < 0)
373 return tnl_del_ioctl(p
.name
[0] ? p
.name
: "ip6tnl0", p
.name
, &p
);
376 int do_ip6tunnel(int argc
, char **argv
)
378 switch (preferred_family
) {
380 preferred_family
= AF_INET6
;
385 fprintf(stderr
, "Unsupported family:%d\n", preferred_family
);
390 if (matches(*argv
, "add") == 0)
391 return do_add(SIOCADDTUNNEL
, argc
- 1, argv
+ 1);
392 if (matches(*argv
, "change") == 0)
393 return do_add(SIOCCHGTUNNEL
, argc
- 1, argv
+ 1);
394 if (matches(*argv
, "del") == 0)
395 return do_del(argc
- 1, argv
+ 1);
396 if (matches(*argv
, "show") == 0 ||
397 matches(*argv
, "lst") == 0 ||
398 matches(*argv
, "list") == 0)
399 return do_show(argc
- 1, argv
+ 1);
400 if (matches(*argv
, "help") == 0)
403 return do_show(0, NULL
);
405 fprintf(stderr
, "Command \"%s\" is unknown, try \"ip -f inet6 tunnel help\".\n", *argv
);