1/*	$OpenBSD: ask_nbrs2.c,v 1.6 2023/06/26 10:08:56 claudio Exp $ */
2
3/*
4 * Copyright (c) 2006 Esben Norby <norby@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <sys/types.h>
20#include <sys/socket.h>
21#include <netinet/in.h>
22#include <netinet/ip.h>
23#include <arpa/inet.h>
24
25#include <stdlib.h>
26
27#include "igmp.h"
28#include "dvmrpd.h"
29#include "dvmrp.h"
30#include "log.h"
31#include "dvmrpe.h"
32
33/* DVMRP ask neighbors2 packet handling */
34int
35send_ask_nbrs2(struct iface *iface, struct in_addr addr, void *data, int len)
36{
37	struct sockaddr_in	 dst;
38	struct ibuf		*buf;
39	int			 ret = 0;
40
41	log_debug("send_ask_nbrs2: interface %s addr %s",
42	    iface->name, inet_ntoa(addr));
43
44	if (iface->passive)
45		return (0);
46
47	if ((buf = ibuf_open(iface->mtu - sizeof(struct ip))) == NULL)
48		fatal("send_ask_nbrs2");
49
50	/* DVMRP header */
51	if (gen_dvmrp_hdr(buf, iface, DVMRP_CODE_GRAFT_ACK))
52		goto fail;
53
54	dst.sin_family = AF_INET;
55	dst.sin_len = sizeof(struct sockaddr_in);
56	dst.sin_addr.s_addr = addr.s_addr;
57
58	ret = send_packet(iface, buf, &dst);
59	ibuf_free(buf);
60	return (ret);
61fail:
62	log_warn("send_ask_nbrs2");
63	ibuf_free(buf);
64	return (-1);
65}
66
67void
68recv_ask_nbrs2(struct nbr *nbr, char *buf, u_int16_t len)
69{
70	log_debug("recv_ask_nbrs2: neighbor ID %s", inet_ntoa(nbr->id));
71
72	return;
73}
74