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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"
27 static void vti6_print_help(struct link_util
*lu
, int argc
, char **argv
,
31 "Usage: ... %-4s [ remote ADDR ]\n"
37 "Where: ADDR := { IPV6_ADDRESS }\n"
38 " KEY := { DOTTED_QUAD | NUMBER }\n"
39 " MARK := { 0x0..0xffffffff }\n",
43 static int vti6_parse_opt(struct link_util
*lu
, int argc
, char **argv
,
46 struct ifinfomsg
*ifi
= NLMSG_DATA(n
);
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 nlmsghdr
*answer
;
58 struct rtattr
*tb
[IFLA_MAX
+ 1];
59 struct rtattr
*linkinfo
[IFLA_INFO_MAX
+1];
60 struct rtattr
*vtiinfo
[IFLA_VTI_MAX
+ 1];
63 inet_prefix saddr
, daddr
;
64 unsigned int link
= 0;
68 inet_prefix_reset(&saddr
);
69 inet_prefix_reset(&daddr
);
71 if (!(n
->nlmsg_flags
& NLM_F_CREATE
)) {
72 const struct rtattr
*rta
;
74 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0) {
77 "Failed to get existing tunnel info.\n");
81 len
= answer
->nlmsg_len
;
82 len
-= NLMSG_LENGTH(sizeof(*ifi
));
86 parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(NLMSG_DATA(answer
)), len
);
88 if (!tb
[IFLA_LINKINFO
])
91 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
93 if (!linkinfo
[IFLA_INFO_DATA
])
96 parse_rtattr_nested(vtiinfo
, IFLA_VTI_MAX
,
97 linkinfo
[IFLA_INFO_DATA
]);
99 rta
= vtiinfo
[IFLA_VTI_LOCAL
];
100 if (rta
&& get_addr_rta(&saddr
, rta
, AF_INET6
))
103 rta
= vtiinfo
[IFLA_VTI_REMOTE
];
104 if (rta
&& get_addr_rta(&daddr
, rta
, AF_INET6
))
107 if (vtiinfo
[IFLA_VTI_IKEY
])
108 ikey
= rta_getattr_u32(vtiinfo
[IFLA_VTI_IKEY
]);
110 if (vtiinfo
[IFLA_VTI_OKEY
])
111 okey
= rta_getattr_u32(vtiinfo
[IFLA_VTI_OKEY
]);
113 if (vtiinfo
[IFLA_VTI_LINK
])
114 link
= rta_getattr_u8(vtiinfo
[IFLA_VTI_LINK
]);
116 if (vtiinfo
[IFLA_VTI_FWMARK
])
117 fwmark
= rta_getattr_u32(vtiinfo
[IFLA_VTI_FWMARK
]);
123 if (!matches(*argv
, "key")) {
125 ikey
= okey
= tnl_parse_key("key", *argv
);
126 } else if (!matches(*argv
, "ikey")) {
128 ikey
= tnl_parse_key("ikey", *argv
);
129 } else if (!matches(*argv
, "okey")) {
131 okey
= tnl_parse_key("okey", *argv
);
132 } else if (!matches(*argv
, "remote")) {
134 get_addr(&daddr
, *argv
, AF_INET6
);
135 } else if (!matches(*argv
, "local")) {
137 get_addr(&saddr
, *argv
, AF_INET6
);
138 } else if (!matches(*argv
, "dev")) {
140 link
= ll_name_to_index(*argv
);
143 } else if (strcmp(*argv
, "fwmark") == 0) {
145 if (get_u32(&fwmark
, *argv
, 0))
146 invarg("invalid fwmark\n", *argv
);
148 vti6_print_help(lu
, argc
, argv
, stderr
);
154 addattr32(n
, 1024, IFLA_VTI_IKEY
, ikey
);
155 addattr32(n
, 1024, IFLA_VTI_OKEY
, okey
);
156 if (is_addrtype_inet_not_unspec(&saddr
))
157 addattr_l(n
, 1024, IFLA_VTI_LOCAL
, saddr
.data
, saddr
.bytelen
);
158 if (is_addrtype_inet_not_unspec(&daddr
))
159 addattr_l(n
, 1024, IFLA_VTI_REMOTE
, daddr
.data
, daddr
.bytelen
);
160 addattr32(n
, 1024, IFLA_VTI_FWMARK
, fwmark
);
162 addattr32(n
, 1024, IFLA_VTI_LINK
, link
);
167 static void vti6_print_opt(struct link_util
*lu
, FILE *f
, struct rtattr
*tb
[])
174 tnl_print_endpoint("remote", tb
[IFLA_VTI_REMOTE
], AF_INET6
);
175 tnl_print_endpoint("local", tb
[IFLA_VTI_LOCAL
], AF_INET6
);
177 if (tb
[IFLA_VTI_LINK
]) {
178 __u32 link
= rta_getattr_u32(tb
[IFLA_VTI_LINK
]);
181 print_string(PRINT_ANY
, "link", "dev %s ",
182 ll_index_to_name(link
));
186 if (tb
[IFLA_VTI_IKEY
]) {
187 struct rtattr
*rta
= tb
[IFLA_VTI_IKEY
];
188 __u32 key
= rta_getattr_u32(rta
);
190 if (key
&& inet_ntop(AF_INET
, RTA_DATA(rta
), s2
, sizeof(s2
)))
191 print_string(PRINT_ANY
, "ikey", "ikey %s ", s2
);
194 if (tb
[IFLA_VTI_OKEY
]) {
195 struct rtattr
*rta
= tb
[IFLA_VTI_OKEY
];
196 __u32 key
= rta_getattr_u32(rta
);
198 if (key
&& inet_ntop(AF_INET
, RTA_DATA(rta
), s2
, sizeof(s2
)))
199 print_string(PRINT_ANY
, "okey", "okey %s ", s2
);
202 if (tb
[IFLA_VTI_FWMARK
]) {
203 __u32 fwmark
= rta_getattr_u32(tb
[IFLA_VTI_FWMARK
]);
206 print_0xhex(PRINT_ANY
,
207 "fwmark", "fwmark %#llx ", fwmark
);
212 struct link_util vti6_link_util
= {
214 .maxattr
= IFLA_VTI_MAX
,
215 .parse_opt
= vti6_parse_opt
,
216 .print_opt
= vti6_print_opt
,
217 .print_help
= vti6_print_help
,