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/* iplink_ipvlan.c IPVLAN 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.
*
* Authors: Mahesh Bandewar <maheshb@google.com>
*/
#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 ipvlan_explain(FILE *f)
{
fprintf(f, "Usage: ... ipvlan [ mode { l2 | l3 } ]\n");
}
static void explain(void)
{
ipvlan_explain(stderr);
}
static int mode_arg(void)
{
fprintf(stderr, "Error: argument of \"mode\" must be either \"l2\", "
"or \"l3\"\n");
return -1;
}
static int ipvlan_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
while (argc > 0) {
if (matches(*argv, "mode") == 0) {
__u16 mode = 0;
NEXT_ARG();
if (strcmp(*argv, "l2") == 0)
mode = IPVLAN_MODE_L2;
else if (strcmp(*argv, "l3") == 0)
mode = IPVLAN_MODE_L3;
else
return mode_arg();
addattr16(n, 1024, IFLA_IPVLAN_MODE, mode);
} else if (matches(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "ipvlan: unknown option \"%s\"?\n",
*argv);
explain();
return -1;
}
argc--, argv++;
}
return 0;
}
static void ipvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
if (!tb)
return;
if (tb[IFLA_IPVLAN_MODE]) {
if (RTA_PAYLOAD(tb[IFLA_IPVLAN_MODE]) == sizeof(__u16)) {
__u16 mode = rta_getattr_u16(tb[IFLA_IPVLAN_MODE]);
fprintf(f, " mode %s ",
mode == IPVLAN_MODE_L2 ? "l2" :
mode == IPVLAN_MODE_L3 ? "l3" : "unknown");
}
}
}
static void ipvlan_print_help(struct link_util *lu, int argc, char **argv,
FILE *f)
{
ipvlan_explain(f);
}
struct link_util ipvlan_link_util = {
.id = "ipvlan",
.maxattr = IFLA_IPVLAN_MAX,
.parse_opt = ipvlan_parse_opt,
.print_opt = ipvlan_print_opt,
.print_help = ipvlan_print_help,
};
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