]>
git.proxmox.com Git - mirror_iproute2.git/blob - ip/link_vti6.c
2 * link_vti6.c VTI driver module
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.
9 * Authors: Herbert Xu <herbert@gondor.apana.org.au>
10 * Saurabh Mohan <saurabh.mohan@vyatta.com> Modified link_gre.c for VTI
11 * Steffen Klassert <steffen.klassert@secunet.com> Modified link_vti.c for IPv6
16 #include <sys/types.h>
17 #include <sys/socket.h>
18 #include <arpa/inet.h>
21 #include <linux/if_tunnel.h>
24 #include "ip_common.h"
28 static void usage(void) __attribute__((noreturn
));
29 static void usage(void)
31 fprintf(stderr
, "Usage: ip link { add | set | change | replace | del } NAME\n");
32 fprintf(stderr
, " type { vti6 } [ remote ADDR ] [ local ADDR ]\n");
33 fprintf(stderr
, " [ [i|o]key KEY ]\n");
34 fprintf(stderr
, " [ dev PHYS_DEV ]\n");
35 fprintf(stderr
, "\n");
36 fprintf(stderr
, "Where: NAME := STRING\n");
37 fprintf(stderr
, " ADDR := { IPV6_ADDRESS }\n");
38 fprintf(stderr
, " KEY := { DOTTED_QUAD | NUMBER }\n");
42 static int vti6_parse_opt(struct link_util
*lu
, int argc
, char **argv
,
45 struct ifinfomsg
*ifi
= (struct ifinfomsg
*)(n
+ 1);
51 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(*ifi
)),
52 .n
.nlmsg_flags
= NLM_F_REQUEST
,
53 .n
.nlmsg_type
= RTM_GETLINK
,
54 .i
.ifi_family
= preferred_family
,
55 .i
.ifi_index
= ifi
->ifi_index
,
57 struct rtattr
*tb
[IFLA_MAX
+ 1];
58 struct rtattr
*linkinfo
[IFLA_INFO_MAX
+1];
59 struct rtattr
*vtiinfo
[IFLA_VTI_MAX
+ 1];
60 struct in6_addr saddr
;
61 struct in6_addr daddr
;
62 unsigned int ikey
= 0;
63 unsigned int okey
= 0;
64 unsigned int link
= 0;
67 if (!(n
->nlmsg_flags
& NLM_F_CREATE
)) {
68 if (rtnl_talk(&rth
, &req
.n
, &req
.n
, sizeof(req
)) < 0) {
71 "Failed to get existing tunnel info.\n");
75 len
= req
.n
.nlmsg_len
;
76 len
-= NLMSG_LENGTH(sizeof(*ifi
));
80 parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(&req
.i
), len
);
82 if (!tb
[IFLA_LINKINFO
])
85 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
87 if (!linkinfo
[IFLA_INFO_DATA
])
90 parse_rtattr_nested(vtiinfo
, IFLA_VTI_MAX
,
91 linkinfo
[IFLA_INFO_DATA
]);
93 if (vtiinfo
[IFLA_VTI_IKEY
])
94 ikey
= rta_getattr_u32(vtiinfo
[IFLA_VTI_IKEY
]);
96 if (vtiinfo
[IFLA_VTI_OKEY
])
97 okey
= rta_getattr_u32(vtiinfo
[IFLA_VTI_OKEY
]);
99 if (vtiinfo
[IFLA_VTI_LOCAL
])
100 memcpy(&saddr
, RTA_DATA(vtiinfo
[IFLA_VTI_LOCAL
]), sizeof(saddr
));
102 if (vtiinfo
[IFLA_VTI_REMOTE
])
103 memcpy(&daddr
, RTA_DATA(vtiinfo
[IFLA_VTI_REMOTE
]), sizeof(daddr
));
105 if (vtiinfo
[IFLA_VTI_LINK
])
106 link
= rta_getattr_u8(vtiinfo
[IFLA_VTI_LINK
]);
110 if (!matches(*argv
, "key")) {
114 if (strchr(*argv
, '.'))
115 uval
= get_addr32(*argv
);
117 if (get_unsigned(&uval
, *argv
, 0) < 0) {
119 "Invalid value for \"key\": \"%s\"; it should be an unsigned integer\n", *argv
);
126 } else if (!matches(*argv
, "ikey")) {
130 if (strchr(*argv
, '.'))
131 uval
= get_addr32(*argv
);
133 if (get_unsigned(&uval
, *argv
, 0) < 0) {
134 fprintf(stderr
, "invalid value for \"ikey\": \"%s\"; it should be an unsigned integer\n", *argv
);
140 } else if (!matches(*argv
, "okey")) {
144 if (strchr(*argv
, '.'))
145 uval
= get_addr32(*argv
);
147 if (get_unsigned(&uval
, *argv
, 0) < 0) {
148 fprintf(stderr
, "invalid value for \"okey\": \"%s\"; it should be an unsigned integer\n", *argv
);
154 } else if (!matches(*argv
, "remote")) {
156 if (!strcmp(*argv
, "any")) {
157 fprintf(stderr
, "invalid value for \"remote\": \"%s\"\n", *argv
);
162 get_prefix(&addr
, *argv
, AF_INET6
);
163 memcpy(&daddr
, addr
.data
, addr
.bytelen
);
165 } else if (!matches(*argv
, "local")) {
167 if (!strcmp(*argv
, "any")) {
168 fprintf(stderr
, "invalid value for \"local\": \"%s\"\n", *argv
);
173 get_prefix(&addr
, *argv
, AF_INET6
);
174 memcpy(&saddr
, addr
.data
, addr
.bytelen
);
176 } else if (!matches(*argv
, "dev")) {
178 link
= if_nametoindex(*argv
);
186 addattr32(n
, 1024, IFLA_VTI_IKEY
, ikey
);
187 addattr32(n
, 1024, IFLA_VTI_OKEY
, okey
);
188 addattr_l(n
, 1024, IFLA_VTI_LOCAL
, &saddr
, sizeof(saddr
));
189 addattr_l(n
, 1024, IFLA_VTI_REMOTE
, &daddr
, sizeof(daddr
));
191 addattr32(n
, 1024, IFLA_VTI_LINK
, link
);
196 static void vti6_print_opt(struct link_util
*lu
, FILE *f
, struct rtattr
*tb
[])
198 const char *local
= "any";
199 const char *remote
= "any";
200 struct in6_addr saddr
;
201 struct in6_addr daddr
;
208 if (tb
[IFLA_VTI_REMOTE
]) {
209 memcpy(&daddr
, RTA_DATA(tb
[IFLA_VTI_REMOTE
]), sizeof(daddr
));
211 remote
= format_host(AF_INET6
, 16, &daddr
);
214 fprintf(f
, "remote %s ", remote
);
216 if (tb
[IFLA_VTI_LOCAL
]) {
217 memcpy(&saddr
, RTA_DATA(tb
[IFLA_VTI_LOCAL
]), sizeof(saddr
));
219 local
= format_host(AF_INET6
, 16, &saddr
);
222 fprintf(f
, "local %s ", local
);
224 if (tb
[IFLA_VTI_LINK
] && (link
= rta_getattr_u32(tb
[IFLA_VTI_LINK
]))) {
225 const char *n
= if_indextoname(link
, s2
);
228 fprintf(f
, "dev %s ", n
);
230 fprintf(f
, "dev %u ", link
);
233 if (tb
[IFLA_VTI_IKEY
]) {
234 inet_ntop(AF_INET
, RTA_DATA(tb
[IFLA_VTI_IKEY
]), s2
, sizeof(s2
));
235 fprintf(f
, "ikey %s ", s2
);
238 if (tb
[IFLA_VTI_OKEY
]) {
239 inet_ntop(AF_INET
, RTA_DATA(tb
[IFLA_VTI_OKEY
]), s2
, sizeof(s2
));
240 fprintf(f
, "okey %s ", s2
);
244 struct link_util vti6_link_util
= {
246 .maxattr
= IFLA_VTI_MAX
,
247 .parse_opt
= vti6_parse_opt
,
248 .print_opt
= vti6_print_opt
,