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d63a9b2b AB |
1 | /* |
2 | * iplink_vlan.c VLAN device support | |
3 | * | |
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. | |
8 | * | |
9 | * Authors: Patrick McHardy <kaber@trash.net> | |
10 | * Arnd Bergmann <arnd@arndb.de> | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <string.h> | |
16 | #include <sys/socket.h> | |
17 | #include <linux/if_link.h> | |
18 | ||
19 | #include "rt_names.h" | |
20 | #include "utils.h" | |
21 | #include "ip_common.h" | |
22 | ||
23 | static void explain(void) | |
24 | { | |
25 | fprintf(stderr, | |
26 | "Usage: ... macvlan mode { private | vepa | bridge }\n" | |
27 | ); | |
28 | } | |
29 | ||
30 | static int mode_arg(void) | |
31 | { | |
32 | fprintf(stderr, "Error: argument of \"mode\" must be \"private\", " | |
33 | "\"vepa\" or \"bridge\"\n"); | |
34 | return -1; | |
35 | } | |
36 | ||
37 | static int macvlan_parse_opt(struct link_util *lu, int argc, char **argv, | |
38 | struct nlmsghdr *n) | |
39 | { | |
40 | while (argc > 0) { | |
41 | if (matches(*argv, "mode") == 0) { | |
42 | __u32 mode = 0; | |
43 | NEXT_ARG(); | |
44 | ||
45 | if (strcmp(*argv, "private") == 0) | |
46 | mode = MACVLAN_MODE_PRIVATE; | |
47 | else if (strcmp(*argv, "vepa") == 0) | |
48 | mode = MACVLAN_MODE_VEPA; | |
49 | else if (strcmp(*argv, "bridge") == 0) | |
50 | mode = MACVLAN_MODE_BRIDGE; | |
51 | else | |
52 | return mode_arg(); | |
53 | ||
54 | addattr32(n, 1024, IFLA_MACVLAN_MODE, mode); | |
55 | } else if (matches(*argv, "help") == 0) { | |
56 | explain(); | |
57 | return -1; | |
58 | } else { | |
59 | fprintf(stderr, "macvlan: what is \"%s\"?\n", *argv); | |
60 | explain(); | |
61 | return -1; | |
62 | } | |
63 | argc--, argv++; | |
64 | } | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | static void macvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
70 | { | |
71 | __u32 mode; | |
72 | ||
73 | if (!tb) | |
74 | return; | |
75 | ||
76 | if (!tb[IFLA_MACVLAN_MODE] || | |
77 | RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32)) | |
78 | return; | |
79 | ||
80 | mode = *(__u32 *)RTA_DATA(tb[IFLA_VLAN_ID]); | |
81 | fprintf(f, " mode %s ", | |
82 | mode == MACVLAN_MODE_PRIVATE ? "private" | |
83 | : mode == MACVLAN_MODE_VEPA ? "vepa" | |
84 | : mode == MACVLAN_MODE_BRIDGE ? "bridge" | |
85 | : "unknown"); | |
86 | } | |
87 | ||
88 | struct link_util macvlan_link_util = { | |
89 | .id = "macvlan", | |
90 | .maxattr = IFLA_MACVLAN_MAX, | |
91 | .parse_opt = macvlan_parse_opt, | |
92 | .print_opt = macvlan_print_opt, | |
93 | }; |