ifgif.c revision 193664 
1/*-
2 * Copyright (c) 2009 Hiroki Sato.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
17 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
21 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
22 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef lint
27static const char rcsid[] =
28  "$FreeBSD: head/sbin/ifconfig/ifgif.c 193664 2009-06-07 23:00:40Z hrs $";
29#endif
30
31#include <sys/param.h>
32#include <sys/ioctl.h>
33#include <sys/socket.h>
34#include <sys/sockio.h>
35
36#include <stdlib.h>
37#include <unistd.h>
38
39#include <net/ethernet.h>
40#include <net/if.h>
41#include <net/if_gif.h>
42#include <net/route.h>
43
44#include <ctype.h>
45#include <stdio.h>
46#include <string.h>
47#include <stdlib.h>
48#include <unistd.h>
49#include <err.h>
50#include <errno.h>
51
52#include "ifconfig.h"
53
54static void	gif_status(int);
55
56static struct {
57	const char	*label;
58	u_int		mask;
59} gif_opts[] = {
60	{ "ACCEPT_REV_ETHIP_VER",	GIF_ACCEPT_REVETHIP	},
61	{ "SEND_REV_ETHIP_VER",		GIF_SEND_REVETHIP	},
62};
63
64static void
65gif_status(int s)
66{
67	int opts;
68	int nopts = 0;
69	int i;
70
71	ifr.ifr_data = (caddr_t)&opts;
72	if (ioctl(s, GIFGOPTS, &ifr) == -1)
73		return;
74
75	printf("\toptions=%d<", opts);
76	for (i=0; i < sizeof(gif_opts)/sizeof(gif_opts[0]); i++) {
77		if (opts & gif_opts[i].mask) {
78			if (nopts++)
79				printf(",");
80			printf("%s", gif_opts[i].label);
81		}
82	}
83	printf(">\n");
84}
85
86static void
87setgifopts(const char *val,
88	int d, int s, const struct afswtch *afp)
89{
90	int opts;
91
92	ifr.ifr_data = (caddr_t)&opts;
93	if (ioctl(s, GIFGOPTS, &ifr) == -1) {
94		warn("ioctl(GIFGOPTS)");
95		return;
96	}
97
98	if (d < 0)
99		opts &= ~(-d);
100	else
101		opts |= d;
102
103	if (ioctl(s, GIFSOPTS, &ifr) == -1) {
104		warn("ioctl(GIFSOPTS)");
105		return;
106	}
107}
108
109static struct cmd gif_cmds[] = {
110	DEF_CMD("accept_rev_ethip_ver",	GIF_ACCEPT_REVETHIP,	setgifopts),
111	DEF_CMD("-accept_rev_ethip_ver",-GIF_ACCEPT_REVETHIP,	setgifopts),
112	DEF_CMD("send_rev_ethip_ver",	GIF_SEND_REVETHIP,	setgifopts),
113	DEF_CMD("-send_rev_ethip_ver",	-GIF_SEND_REVETHIP,	setgifopts),
114};
115
116static struct afswtch af_gif = {
117	.af_name	= "af_gif",
118	.af_af		= AF_UNSPEC,
119	.af_other_status = gif_status,
120};
121
122static __constructor void
123gif_ctor(void)
124{
125#define	N(a)	(sizeof(a) / sizeof(a[0]))
126	int i;
127
128	for (i = 0; i < N(gif_cmds); i++)
129		cmd_register(&gif_cmds[i]);
130	af_register(&af_gif);
131#undef N
132}
133