GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/eigrpd/query.c Lines: 0 36 0.0 %
Date: 2017-11-13 Branches: 0 29 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: query.c,v 1.5 2016/09/02 16:46:29 renato Exp $ */
2
3
/*
4
 * Copyright (c) 2015 Renato Westphal <renato@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 <netinet/in.h>
21
#include <netinet/ip.h>
22
#include <netinet/ip6.h>
23
24
#include <stdlib.h>
25
26
#include "eigrpd.h"
27
#include "eigrpe.h"
28
#include "log.h"
29
30
/* query packet handling */
31
32
void
33
send_query(struct eigrp_iface *ei, struct nbr *nbr,
34
    struct rinfo_head *rinfo_list, int siaquery)
35
{
36
	struct eigrp		*eigrp = ei->eigrp;
37
	struct ibuf		*buf;
38
	uint16_t		 opcode;
39
	struct rinfo_entry	*re;
40
	int			 size;
41
	int			 route_len;
42
43
	if (rinfo_list == NULL || TAILQ_EMPTY(rinfo_list))
44
		return;
45
46
	do {
47
		if ((buf = ibuf_dynamic(PKG_DEF_SIZE,
48
		    IP_MAXPACKET - sizeof(struct ip))) == NULL)
49
			fatal("send_query");
50
51
		if (!siaquery)
52
			 opcode = EIGRP_OPC_QUERY;
53
		else
54
			 opcode = EIGRP_OPC_SIAQUERY;
55
56
		/* EIGRP header */
57
		if (gen_eigrp_hdr(buf, opcode, 0, eigrp->seq_num, eigrp->as))
58
			goto fail;
59
60
		switch (eigrp->af) {
61
		case AF_INET:
62
			size = sizeof(struct ip);
63
			break;
64
		case AF_INET6:
65
			size = sizeof(struct ip6_hdr);
66
			break;
67
		default:
68
			fatalx("send_query: unknown af");
69
		}
70
		size += sizeof(struct eigrp_hdr);
71
72
		while ((re = TAILQ_FIRST(rinfo_list)) != NULL) {
73
			route_len = len_route_tlv(&re->rinfo);
74
			/* don't exceed the MTU to avoid IP fragmentation */
75
			if (size + route_len > ei->iface->mtu) {
76
				rtp_send(ei, nbr, buf);
77
				break;
78
			}
79
			size += route_len;
80
81
			if (gen_route_tlv(buf, &re->rinfo))
82
				goto fail;
83
			TAILQ_REMOVE(rinfo_list, re, entry);
84
			free(re);
85
		}
86
	} while (!TAILQ_EMPTY(rinfo_list));
87
88
	rtp_send(ei, nbr, buf);
89
	return;
90
fail:
91
	log_warnx("%s: failed to send message", __func__);
92
	if (rinfo_list)
93
		message_list_clr(rinfo_list);
94
	ibuf_free(buf);
95
	return;
96
}
97
98
void
99
recv_query(struct nbr *nbr, struct rinfo_head *rinfo_list, int siaquery)
100
{
101
	int			 type;
102
	struct rinfo_entry	*re;
103
104
	rtp_ack_start_timer(nbr);
105
106
	if (!siaquery)
107
		type = IMSG_RECV_QUERY;
108
	else
109
		type = IMSG_RECV_SIAQUERY;
110
111
	TAILQ_FOREACH(re, rinfo_list, entry)
112
		eigrpe_imsg_compose_rde(type, nbr->peerid, 0, &re->rinfo,
113
		    sizeof(re->rinfo));
114
}