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88272775 | 1 | /* iplink_ipvlan.c IPVLAN/IPVTAP device support |
81eaf677 MB |
2 | * |
3 | * This program is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU General Public License | |
5 | * as published by the Free Software Foundation; either version | |
6 | * 2 of the License, or (at your option) any later version. | |
7 | * | |
8 | * Authors: Mahesh Bandewar <maheshb@google.com> | |
9 | */ | |
10 | ||
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
14 | #include <sys/socket.h> | |
15 | #include <linux/if_link.h> | |
16 | ||
17 | #include "rt_names.h" | |
18 | #include "utils.h" | |
19 | #include "ip_common.h" | |
20 | ||
88272775 | 21 | static void print_explain(struct link_util *lu, FILE *f) |
81eaf677 | 22 | { |
1ef5c952 | 23 | fprintf(f, |
88272775 | 24 | "Usage: ... %s [ mode MODE ] [ FLAGS ]\n" |
1ef5c952 MB |
25 | "\n" |
26 | "MODE: l3 | l3s | l2\n" | |
27 | "FLAGS: bridge | private | vepa\n" | |
88272775 HL |
28 | "(first values are the defaults if nothing is specified).\n", |
29 | lu->id); | |
81eaf677 MB |
30 | } |
31 | ||
32 | static int ipvlan_parse_opt(struct link_util *lu, int argc, char **argv, | |
33 | struct nlmsghdr *n) | |
34 | { | |
1ef5c952 MB |
35 | __u16 flags = 0; |
36 | bool mflag_given = false; | |
37 | ||
81eaf677 MB |
38 | while (argc > 0) { |
39 | if (matches(*argv, "mode") == 0) { | |
40 | __u16 mode = 0; | |
56f5daac | 41 | |
81eaf677 MB |
42 | NEXT_ARG(); |
43 | ||
44 | if (strcmp(*argv, "l2") == 0) | |
45 | mode = IPVLAN_MODE_L2; | |
46 | else if (strcmp(*argv, "l3") == 0) | |
47 | mode = IPVLAN_MODE_L3; | |
b7c14880 MB |
48 | else if (strcmp(*argv, "l3s") == 0) |
49 | mode = IPVLAN_MODE_L3S; | |
50 | else { | |
51 | fprintf(stderr, "Error: argument of \"mode\" must be either \"l2\", \"l3\" or \"l3s\"\n"); | |
52 | return -1; | |
53 | } | |
81eaf677 | 54 | addattr16(n, 1024, IFLA_IPVLAN_MODE, mode); |
1ef5c952 MB |
55 | } else if (matches(*argv, "private") == 0 && !mflag_given) { |
56 | flags |= IPVLAN_F_PRIVATE; | |
57 | mflag_given = true; | |
58 | } else if (matches(*argv, "vepa") == 0 && !mflag_given) { | |
59 | flags |= IPVLAN_F_VEPA; | |
60 | mflag_given = true; | |
61 | } else if (matches(*argv, "bridge") == 0 && !mflag_given) { | |
62 | mflag_given = true; | |
81eaf677 | 63 | } else if (matches(*argv, "help") == 0) { |
88272775 | 64 | print_explain(lu, stderr); |
81eaf677 MB |
65 | return -1; |
66 | } else { | |
88272775 HL |
67 | fprintf(stderr, "%s: unknown option \"%s\"?\n", |
68 | lu->id, *argv); | |
69 | print_explain(lu, stderr); | |
81eaf677 MB |
70 | return -1; |
71 | } | |
b7c14880 MB |
72 | argc--; |
73 | argv++; | |
81eaf677 | 74 | } |
1ef5c952 | 75 | addattr16(n, 1024, IFLA_IPVLAN_FLAGS, flags); |
81eaf677 MB |
76 | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static void ipvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
81 | { | |
82 | ||
83 | if (!tb) | |
84 | return; | |
85 | ||
86 | if (tb[IFLA_IPVLAN_MODE]) { | |
87 | if (RTA_PAYLOAD(tb[IFLA_IPVLAN_MODE]) == sizeof(__u16)) { | |
88 | __u16 mode = rta_getattr_u16(tb[IFLA_IPVLAN_MODE]); | |
8f24afc9 | 89 | const char *mode_str = mode == IPVLAN_MODE_L2 ? "l2" : |
b7c14880 | 90 | mode == IPVLAN_MODE_L3 ? "l3" : |
8f24afc9 JF |
91 | mode == IPVLAN_MODE_L3S ? "l3s" : "unknown"; |
92 | ||
93 | print_string(PRINT_ANY, "mode", " mode %s ", mode_str); | |
81eaf677 MB |
94 | } |
95 | } | |
1ef5c952 MB |
96 | if (tb[IFLA_IPVLAN_FLAGS]) { |
97 | if (RTA_PAYLOAD(tb[IFLA_IPVLAN_FLAGS]) == sizeof(__u16)) { | |
98 | __u16 flags = rta_getattr_u16(tb[IFLA_IPVLAN_FLAGS]); | |
99 | ||
100 | if (flags & IPVLAN_F_PRIVATE) | |
101 | print_bool(PRINT_ANY, "private", "private ", | |
102 | true); | |
103 | else if (flags & IPVLAN_F_VEPA) | |
104 | print_bool(PRINT_ANY, "vepa", "vepa ", | |
105 | true); | |
106 | else | |
107 | print_bool(PRINT_ANY, "bridge", "bridge ", | |
108 | true); | |
109 | } | |
110 | } | |
81eaf677 MB |
111 | } |
112 | ||
113 | static void ipvlan_print_help(struct link_util *lu, int argc, char **argv, | |
114 | FILE *f) | |
115 | { | |
88272775 | 116 | print_explain(lu, f); |
81eaf677 MB |
117 | } |
118 | ||
119 | struct link_util ipvlan_link_util = { | |
120 | .id = "ipvlan", | |
121 | .maxattr = IFLA_IPVLAN_MAX, | |
122 | .parse_opt = ipvlan_parse_opt, | |
123 | .print_opt = ipvlan_print_opt, | |
124 | .print_help = ipvlan_print_help, | |
125 | }; | |
88272775 HL |
126 | |
127 | struct link_util ipvtap_link_util = { | |
128 | .id = "ipvtap", | |
129 | .maxattr = IFLA_IPVLAN_MAX, | |
130 | .parse_opt = ipvlan_parse_opt, | |
131 | .print_opt = ipvlan_print_opt, | |
132 | .print_help = ipvlan_print_help, | |
133 | }; |