GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/eigrpd/update.c Lines: 0 39 0.0 %
Date: 2017-11-13 Branches: 0 27 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: update.c,v 1.6 2016/09/02 16:46:29 renato Exp $ */
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/*
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 * Copyright (c) 2015 Renato Westphal <renato@openbsd.org>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <stdlib.h>
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#include "eigrpd.h"
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#include "eigrpe.h"
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#include "log.h"
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/* update packet handling */
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void
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send_update(struct eigrp_iface *ei, struct nbr *nbr, uint32_t flags,
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    struct rinfo_head *rinfo_list)
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{
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	struct eigrp		*eigrp = ei->eigrp;
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	struct ibuf		*buf;
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	struct rinfo_entry	*re;
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	int			 size;
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	int			 route_len;
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	do {
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		if ((buf = ibuf_dynamic(PKG_DEF_SIZE,
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		    IP_MAXPACKET - sizeof(struct ip))) == NULL)
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			fatal("send_update");
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		/* EIGRP header */
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		if (gen_eigrp_hdr(buf, EIGRP_OPC_UPDATE, flags,
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		    eigrp->seq_num, eigrp->as))
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			goto fail;
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		if (rinfo_list == NULL)
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			break;
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		switch (eigrp->af) {
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		case AF_INET:
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			size = sizeof(struct ip);
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			break;
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		case AF_INET6:
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			size = sizeof(struct ip6_hdr);
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			break;
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		default:
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			fatalx("send_update: unknown af");
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		}
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		size += sizeof(struct eigrp_hdr);
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		while ((re = TAILQ_FIRST(rinfo_list)) != NULL) {
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			route_len = len_route_tlv(&re->rinfo);
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			/* don't exceed the MTU to avoid IP fragmentation */
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			if (size + route_len > ei->iface->mtu) {
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				rtp_send(ei, nbr, buf);
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				break;
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			}
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			size += route_len;
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			if (gen_route_tlv(buf, &re->rinfo))
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				goto fail;
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			TAILQ_REMOVE(rinfo_list, re, entry);
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			free(re);
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		}
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	} while (!TAILQ_EMPTY(rinfo_list));
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	rtp_send(ei, nbr, buf);
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	return;
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fail:
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	log_warnx("%s: failed to send message", __func__);
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	if (rinfo_list)
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		message_list_clr(rinfo_list);
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	ibuf_free(buf);
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	return;
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}
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void
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recv_update(struct nbr *nbr, struct rinfo_head *rinfo_list, uint32_t flags)
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{
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	struct rinfo_entry	*re;
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	rtp_ack_start_timer(nbr);
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	if (flags & EIGRP_HDR_FLAG_INIT) {
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		log_debug("%s: INIT flag is set", __func__);
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		if (nbr->flags & F_EIGRP_NBR_PENDING)
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			nbr_init(nbr);
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		/*
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		 * The INIT flag instructs us to advertise all of our routes,
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		 * even if the neighbor is not pending.
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		 */
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		eigrpe_imsg_compose_rde(IMSG_RECV_UPDATE_INIT, nbr->peerid,
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		    0, NULL, 0);
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		return;
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	}
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	TAILQ_FOREACH(re, rinfo_list, entry)
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		eigrpe_imsg_compose_rde(IMSG_RECV_UPDATE, nbr->peerid,
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		    0, &re->rinfo, sizeof(re->rinfo));
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}