2 * iplink_geneve.c GENEVE device support
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: John W. Linville <linville@tuxdriver.com>
16 #include "ip_common.h"
18 static void print_explain(FILE *f
)
20 fprintf(f
, "Usage: ... geneve id VNI remote ADDR\n");
21 fprintf(f
, " [ ttl TTL ] [ tos TOS ]\n");
23 fprintf(f
, "Where: VNI := 0-16777215\n");
24 fprintf(f
, " ADDR := IP_ADDRESS\n");
25 fprintf(f
, " TOS := { NUMBER | inherit }\n");
26 fprintf(f
, " TTL := { 1..255 | inherit }\n");
29 static void explain(void)
31 print_explain(stderr
);
34 static int geneve_parse_opt(struct link_util
*lu
, int argc
, char **argv
,
40 struct in6_addr daddr6
= IN6ADDR_ANY_INIT
;
45 if (!matches(*argv
, "id") ||
46 !matches(*argv
, "vni")) {
48 if (get_u32(&vni
, *argv
, 0) ||
50 invarg("invalid id", *argv
);
52 } else if (!matches(*argv
, "remote")) {
54 if (!inet_get_addr(*argv
, &daddr
, &daddr6
)) {
55 fprintf(stderr
, "Invalid address \"%s\"\n", *argv
);
58 if (IN_MULTICAST(ntohl(daddr
)))
59 invarg("invalid remote address", *argv
);
60 } else if (!matches(*argv
, "ttl") ||
61 !matches(*argv
, "hoplimit")) {
65 if (strcmp(*argv
, "inherit") != 0) {
66 if (get_unsigned(&uval
, *argv
, 0))
67 invarg("invalid TTL", *argv
);
69 invarg("TTL must be <= 255", *argv
);
72 } else if (!matches(*argv
, "tos") ||
73 !matches(*argv
, "dsfield")) {
77 if (strcmp(*argv
, "inherit") != 0) {
78 if (rtnl_dsfield_a2n(&uval
, *argv
))
79 invarg("bad TOS value", *argv
);
83 } else if (matches(*argv
, "help") == 0) {
87 fprintf(stderr
, "geneve: unknown command \"%s\"?\n", *argv
);
95 fprintf(stderr
, "geneve: missing virtual network identifier\n");
100 fprintf(stderr
, "geneve: remove link partner not specified\n");
103 if (memcmp(&daddr6
, &in6addr_any
, sizeof(daddr6
)) != 0) {
104 fprintf(stderr
, "geneve: remove link over IPv6 not supported\n");
108 addattr32(n
, 1024, IFLA_GENEVE_ID
, vni
);
110 addattr_l(n
, 1024, IFLA_GENEVE_REMOTE
, &daddr
, 4);
111 addattr8(n
, 1024, IFLA_GENEVE_TTL
, ttl
);
112 addattr8(n
, 1024, IFLA_GENEVE_TOS
, tos
);
117 static void geneve_print_opt(struct link_util
*lu
, FILE *f
, struct rtattr
*tb
[])
126 if (!tb
[IFLA_GENEVE_ID
] ||
127 RTA_PAYLOAD(tb
[IFLA_GENEVE_ID
]) < sizeof(__u32
))
130 vni
= rta_getattr_u32(tb
[IFLA_GENEVE_ID
]);
131 fprintf(f
, "id %u ", vni
);
133 if (tb
[IFLA_GENEVE_REMOTE
]) {
134 __be32 addr
= rta_getattr_u32(tb
[IFLA_GENEVE_REMOTE
]);
136 fprintf(f
, "remote %s ",
137 format_host(AF_INET
, 4, &addr
, s1
, sizeof(s1
)));
140 if (tb
[IFLA_GENEVE_TTL
]) {
141 __u8 ttl
= rta_getattr_u8(tb
[IFLA_GENEVE_TTL
]);
143 fprintf(f
, "ttl %d ", ttl
);
146 if (tb
[IFLA_GENEVE_TOS
] &&
147 (tos
= rta_getattr_u8(tb
[IFLA_GENEVE_TOS
]))) {
149 fprintf(f
, "tos inherit ");
151 fprintf(f
, "tos %#x ", tos
);
155 static void geneve_print_help(struct link_util
*lu
, int argc
, char **argv
,
161 struct link_util geneve_link_util
= {
163 .maxattr
= IFLA_GENEVE_MAX
,
164 .parse_opt
= geneve_parse_opt
,
165 .print_opt
= geneve_print_opt
,
166 .print_help
= geneve_print_help
,