[mirror_iproute2.git] / ip / iplink_macvtap.c

/*
 * iplink_macvtap.c	macvtap device support
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <linux/if_link.h>

#include "rt_names.h"
#include "utils.h"
#include "ip_common.h"

static void print_explain(FILE *f)
{
	fprintf(stderr,
		"Usage: ... macvtap mode { private | vepa | bridge | passthru }\n"
	);
}

static void explain(void)
{
	print_explain(stderr);
}

static int mode_arg(const char *arg)
{
        fprintf(stderr, "Error: argument of \"mode\" must be \"private\", "
		"\"vepa\", \"bridge\" or \"passthru\", not \"%s\"\n", arg);
        return -1;
}

static int macvtap_parse_opt(struct link_util *lu, int argc, char **argv,
			  struct nlmsghdr *n)
{
	while (argc > 0) {
		if (matches(*argv, "mode") == 0) {
			__u32 mode = 0;
			NEXT_ARG();

			if (strcmp(*argv, "private") == 0)
				mode = MACVLAN_MODE_PRIVATE;
			else if (strcmp(*argv, "vepa") == 0)
				mode = MACVLAN_MODE_VEPA;
			else if (strcmp(*argv, "bridge") == 0)
				mode = MACVLAN_MODE_BRIDGE;
			else if (strcmp(*argv, "passthru") == 0)
				mode = MACVLAN_MODE_PASSTHRU;
			else
				return mode_arg(*argv);

			addattr32(n, 1024, IFLA_MACVLAN_MODE, mode);
		} else if (matches(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "macvtap: unknown command \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--, argv++;
	}

	return 0;
}

static void macvtap_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
	__u32 mode;

	if (!tb)
		return;

	if (!tb[IFLA_MACVLAN_MODE] ||
	    RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32))
		return;

	mode = rta_getattr_u32(tb[IFLA_VLAN_ID]);
	fprintf(f, " mode %s ",
		  mode == MACVLAN_MODE_PRIVATE ? "private"
		: mode == MACVLAN_MODE_VEPA    ? "vepa"
		: mode == MACVLAN_MODE_BRIDGE  ? "bridge"
		: mode == MACVLAN_MODE_PASSTHRU  ? "passthru"
		:				 "unknown");
}

static void macvtap_print_help(struct link_util *lu, int argc, char **argv,
	FILE *f)
{
	print_explain(f);
}

struct link_util macvtap_link_util = {
	.id		= "macvtap",
	.maxattr	= IFLA_MACVLAN_MAX,
	.parse_opt	= macvtap_parse_opt,
	.print_opt	= macvtap_print_opt,
	.print_help	= macvtap_print_help,
};
Commit	Line	Data
	1	/*
	2	* iplink_macvtap.c macvtap 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
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/socket.h>
	14	#include <linux/if_link.h>
	15
	16	#include "rt_names.h"
	17	#include "utils.h"
	18	#include "ip_common.h"
	19
	20	static void print_explain(FILE *f)
	21	{
	22	fprintf(stderr,
	23	"Usage: ... macvtap mode { private \| vepa \| bridge \| passthru }\n"
	24	);
	25	}
	26
	27	static void explain(void)
	28	{
	29	print_explain(stderr);
	30	}
	31
	32	static int mode_arg(const char *arg)
	33	{
	34	fprintf(stderr, "Error: argument of \"mode\" must be \"private\", "
	35	"\"vepa\", \"bridge\" or \"passthru\", not \"%s\"\n", arg);
	36	return -1;
	37	}
	38
	39	static int macvtap_parse_opt(struct link_util lu, int argc, char *argv,
	40	struct nlmsghdr *n)
	41	{
	42	while (argc > 0) {
	43	if (matches(*argv, "mode") == 0) {
	44	__u32 mode = 0;
	45	NEXT_ARG();
	46
	47	if (strcmp(*argv, "private") == 0)
	48	mode = MACVLAN_MODE_PRIVATE;
	49	else if (strcmp(*argv, "vepa") == 0)
	50	mode = MACVLAN_MODE_VEPA;
	51	else if (strcmp(*argv, "bridge") == 0)
	52	mode = MACVLAN_MODE_BRIDGE;
	53	else if (strcmp(*argv, "passthru") == 0)
	54	mode = MACVLAN_MODE_PASSTHRU;
	55	else
	56	return mode_arg(*argv);
	57
	58	addattr32(n, 1024, IFLA_MACVLAN_MODE, mode);
	59	} else if (matches(*argv, "help") == 0) {
	60	explain();
	61	return -1;
	62	} else {
	63	fprintf(stderr, "macvtap: unknown command \"%s\"?\n", *argv);
	64	explain();
	65	return -1;
	66	}
	67	argc--, argv++;
	68	}
	69
	70	return 0;
	71	}
	72
	73	static void macvtap_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	74	{
	75	__u32 mode;
	76
	77	if (!tb)
	78	return;
	79
	80	if (!tb[IFLA_MACVLAN_MODE] \|\|
	81	RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32))
	82	return;
	83
	84	mode = rta_getattr_u32(tb[IFLA_VLAN_ID]);
	85	fprintf(f, " mode %s ",
	86	mode == MACVLAN_MODE_PRIVATE ? "private"
	87	: mode == MACVLAN_MODE_VEPA ? "vepa"
	88	: mode == MACVLAN_MODE_BRIDGE ? "bridge"
	89	: mode == MACVLAN_MODE_PASSTHRU ? "passthru"
	90	: "unknown");
	91	}
	92
	93	static void macvtap_print_help(struct link_util lu, int argc, char *argv,
	94	FILE *f)
	95	{
	96	print_explain(f);
	97	}
	98
	99	struct link_util macvtap_link_util = {
	100	.id = "macvtap",
	101	.maxattr = IFLA_MACVLAN_MAX,
	102	.parse_opt = macvtap_parse_opt,
	103	.print_opt = macvtap_print_opt,
	104	.print_help = macvtap_print_help,
	105	};