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
23static void explain(void)
24{
25	fprintf(stderr,
26		"Usage: ... macvlan mode { private | vepa | bridge | passthru }\n"
27	);
28}
29
30static int mode_arg(void)
31{
32        fprintf(stderr, "Error: argument of \"mode\" must be \"private\", "
33		"\"vepa\", \"bridge\" or \"passthru\" \n");
34        return -1;
35}
36
37static 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 if (strcmp(*argv, "passthru") == 0)
52				mode = MACVLAN_MODE_PASSTHRU;
53			else
54				return mode_arg();
55
56			addattr32(n, 1024, IFLA_MACVLAN_MODE, mode);
57		} else if (matches(*argv, "help") == 0) {
58			explain();
59			return -1;
60		} else {
61			fprintf(stderr, "macvlan: what is \"%s\"?\n", *argv);
62			explain();
63			return -1;
64		}
65		argc--, argv++;
66	}
67
68	return 0;
69}
70
71static void macvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
72{
73	__u32 mode;
74
75	if (!tb)
76		return;
77
78	if (!tb[IFLA_MACVLAN_MODE] ||
79	    RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32))
80		return;
81
82	mode = rta_getattr_u32(tb[IFLA_VLAN_ID]);
83	fprintf(f, " mode %s ",
84		  mode == MACVLAN_MODE_PRIVATE ? "private"
85		: mode == MACVLAN_MODE_VEPA    ? "vepa"
86		: mode == MACVLAN_MODE_BRIDGE  ? "bridge"
87		: mode == MACVLAN_MODE_PASSTHRU  ? "passthru"
88		:				 "unknown");
89}
90
91struct link_util macvlan_link_util = {
92	.id		= "macvlan",
93	.maxattr	= IFLA_MACVLAN_MAX,
94	.parse_opt	= macvlan_parse_opt,
95	.print_opt	= macvlan_print_opt,
96};
97