/* iplink_ipvlan.c IPVLAN device support
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Mahesh Bandewar <maheshb@google.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <linux/if_link.h>
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#include "rt_names.h"
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#include "utils.h"
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#include "ip_common.h"
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static void ipvlan_explain(FILE *f)
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{
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fprintf(f, "Usage: ... ipvlan [ mode { l2 | l3 | l3s } ]\n");
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}
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static int ipvlan_parse_opt(struct link_util *lu, int argc, char **argv,
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struct nlmsghdr *n)
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{
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while (argc > 0) {
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if (matches(*argv, "mode") == 0) {
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__u16 mode = 0;
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NEXT_ARG();
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if (strcmp(*argv, "l2") == 0)
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mode = IPVLAN_MODE_L2;
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else if (strcmp(*argv, "l3") == 0)
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mode = IPVLAN_MODE_L3;
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else if (strcmp(*argv, "l3s") == 0)
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mode = IPVLAN_MODE_L3S;
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else {
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fprintf(stderr, "Error: argument of \"mode\" must be either \"l2\", \"l3\" or \"l3s\"\n");
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return -1;
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}
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addattr16(n, 1024, IFLA_IPVLAN_MODE, mode);
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} else if (matches(*argv, "help") == 0) {
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ipvlan_explain(stderr);
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return -1;
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} else {
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fprintf(stderr, "ipvlan: unknown option \"%s\"?\n",
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*argv);
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ipvlan_explain(stderr);
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return -1;
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}
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argc--;
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argv++;
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}
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return 0;
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}
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static void ipvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
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{
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if (!tb)
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return;
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if (tb[IFLA_IPVLAN_MODE]) {
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if (RTA_PAYLOAD(tb[IFLA_IPVLAN_MODE]) == sizeof(__u16)) {
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__u16 mode = rta_getattr_u16(tb[IFLA_IPVLAN_MODE]);
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const char *mode_str = mode == IPVLAN_MODE_L2 ? "l2" :
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mode == IPVLAN_MODE_L3 ? "l3" :
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mode == IPVLAN_MODE_L3S ? "l3s" : "unknown";
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print_string(PRINT_ANY, "mode", " mode %s ", mode_str);
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}
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}
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}
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static void ipvlan_print_help(struct link_util *lu, int argc, char **argv,
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FILE *f)
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{
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ipvlan_explain(f);
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}
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struct link_util ipvlan_link_util = {
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.id = "ipvlan",
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.maxattr = IFLA_IPVLAN_MAX,
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.parse_opt = ipvlan_parse_opt,
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.print_opt = ipvlan_print_opt,
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.print_help = ipvlan_print_help,
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};
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