1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2009 Hiroki Sato.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
25 * THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/param.h>
29#include <sys/ioctl.h>
30#include <sys/socket.h>
31#include <sys/sockio.h>
32
33#include <stdlib.h>
34#include <unistd.h>
35
36#include <net/ethernet.h>
37#include <net/if.h>
38#include <net/if_gif.h>
39#include <net/route.h>
40
41#include <ctype.h>
42#include <stdio.h>
43#include <string.h>
44#include <stdlib.h>
45#include <unistd.h>
46#include <err.h>
47#include <errno.h>
48
49#include "ifconfig.h"
50
51static const char *GIFBITS[] = {
52	[1] = "IGNORE_SOURCE",
53};
54
55static void
56gif_status(if_ctx *ctx)
57{
58	int opts;
59	struct ifreq ifr = { .ifr_data = (caddr_t)&opts };
60
61	if (ioctl_ctx_ifr(ctx, GIFGOPTS, &ifr) == -1)
62		return;
63	if (opts == 0)
64		return;
65	printf("\toptions=%x", opts);
66	print_bits("options", &opts, 1, GIFBITS, nitems(GIFBITS));
67	putchar('\n');
68}
69
70static void
71setgifopts(if_ctx *ctx, const char *val __unused, int d)
72{
73	int opts;
74	struct ifreq ifr = { .ifr_data = (caddr_t)&opts };
75
76	if (ioctl_ctx_ifr(ctx, GIFGOPTS, &ifr) == -1) {
77		warn("ioctl(GIFGOPTS)");
78		return;
79	}
80
81	if (d < 0)
82		opts &= ~(-d);
83	else
84		opts |= d;
85
86	if (ioctl_ctx(ctx, GIFSOPTS, &ifr) == -1) {
87		warn("ioctl(GIFSOPTS)");
88		return;
89	}
90}
91
92static struct cmd gif_cmds[] = {
93	DEF_CMD("ignore_source",	GIF_IGNORE_SOURCE,	setgifopts),
94	DEF_CMD("-ignore_source",	-GIF_IGNORE_SOURCE,	setgifopts),
95};
96
97static struct afswtch af_gif = {
98	.af_name	= "af_gif",
99	.af_af		= AF_UNSPEC,
100	.af_other_status = gif_status,
101};
102
103static __constructor void
104gif_ctor(void)
105{
106	size_t i;
107
108	for (i = 0; i < nitems(gif_cmds); i++)
109		cmd_register(&gif_cmds[i]);
110	af_register(&af_gif);
111}
112