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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/ospf6d/lsreq.c	Lines:	0	90	0.0 %
Date:	2017-11-13	Branches:	0	80	0.0 %


/*	$OpenBSD: lsreq.c,v 1.8 2013/03/22 14:26:35 sthen Exp $ */

/*
 * Copyright (c) 2004, 2005, 2007 Esben Norby <norby@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>

#include "ospf6d.h"
#include "ospf6.h"
#include "log.h"
#include "ospfe.h"

extern struct imsgev		*iev_rde;

/* link state request packet handling */
int
send_ls_req(struct nbr *nbr)
{
	struct in6_addr		 dst;
	struct ls_req_hdr	 ls_req_hdr;
	struct lsa_entry	*le, *nle;
	struct ibuf		*buf;
	int			 ret;

	if ((buf = ibuf_open(nbr->iface->mtu - sizeof(struct ip))) == NULL)
		fatal("send_ls_req");

	switch (nbr->iface->type) {
	case IF_TYPE_POINTOPOINT:
		inet_pton(AF_INET6, AllSPFRouters, &dst);
		break;
	case IF_TYPE_BROADCAST:
	case IF_TYPE_NBMA:
	case IF_TYPE_POINTOMULTIPOINT:
	case IF_TYPE_VIRTUALLINK:
		dst = nbr->addr;
		break;
	default:
		fatalx("send_ls_req: unknown interface type");
	}

	/* OSPF header */
	if (gen_ospf_hdr(buf, nbr->iface, PACKET_TYPE_LS_REQUEST))
		goto fail;

	/* LSA header(s) */
	for (le = TAILQ_FIRST(&nbr->ls_req_list); le != NULL &&
	    buf->wpos + sizeof(struct ls_req_hdr) < buf->max; le = nle) {
		nbr->ls_req = nle = TAILQ_NEXT(le, entry);
		ls_req_hdr.zero = 0;
		ls_req_hdr.type = le->le_lsa->type;
		ls_req_hdr.ls_id = le->le_lsa->ls_id;
		ls_req_hdr.adv_rtr = le->le_lsa->adv_rtr;
		if (ibuf_add(buf, &ls_req_hdr, sizeof(ls_req_hdr)))
			goto fail;
	}

	/* calculate checksum */
	if (upd_ospf_hdr(buf, nbr->iface))
		goto fail;

	ret = send_packet(nbr->iface, buf->buf, buf->wpos, &dst);

	ibuf_free(buf);
	return (ret);
fail:
	log_warn("send_ls_req");
	ibuf_free(buf);
	return (-1);
}

void
recv_ls_req(struct nbr *nbr, char *buf, u_int16_t len)
{
	switch (nbr->state) {
	case NBR_STA_DOWN:
	case NBR_STA_ATTEMPT:
	case NBR_STA_INIT:
	case NBR_STA_2_WAY:
	case NBR_STA_XSTRT:
	case NBR_STA_SNAP:
		log_debug("recv_ls_req: packet ignored in state %s, "
		    "neighbor ID %s", nbr_state_name(nbr->state),
		    inet_ntoa(nbr->id));
		break;
	case NBR_STA_XCHNG:
	case NBR_STA_LOAD:
	case NBR_STA_FULL:
		imsg_compose_event(iev_rde, IMSG_LS_REQ, nbr->peerid,
		    0, -1, buf, len);
		break;
	default:
		fatalx("recv_ls_req: unknown neighbor state");
	}
}

/* link state request list */
void
ls_req_list_add(struct nbr *nbr, struct lsa_hdr *lsa)
{
	struct lsa_entry	*le;

	if (lsa == NULL)
		fatalx("ls_req_list_add: no LSA header");

	if ((le = calloc(1, sizeof(*le))) == NULL)
		fatal("ls_req_list_add");

	TAILQ_INSERT_TAIL(&nbr->ls_req_list, le, entry);
	le->le_lsa = lsa;
	nbr->ls_req_cnt++;
}

struct lsa_entry *
ls_req_list_get(struct nbr *nbr, struct lsa_hdr *lsa_hdr)
{
	struct lsa_entry	*le;

	TAILQ_FOREACH(le, &nbr->ls_req_list, entry) {
		if ((lsa_hdr->type == le->le_lsa->type) &&
		    (lsa_hdr->ls_id == le->le_lsa->ls_id) &&
		    (lsa_hdr->adv_rtr == le->le_lsa->adv_rtr))
			return (le);
	}
	return (NULL);
}

void
ls_req_list_free(struct nbr *nbr, struct lsa_entry *le)
{
	if (nbr->ls_req == le) {
		nbr->ls_req = TAILQ_NEXT(le, entry);
	}

	TAILQ_REMOVE(&nbr->ls_req_list, le, entry);
	free(le->le_lsa);
	free(le);
	nbr->ls_req_cnt--;

	/* received all requested LSA(s), send a new LS req */
	if (nbr->ls_req != NULL &&
	    nbr->ls_req == TAILQ_FIRST(&nbr->ls_req_list)) {
		start_ls_req_tx_timer(nbr);
	}

	/* we might not have received all DDs and are still in XCHNG */
	if (ls_req_list_empty(nbr) && nbr->dd_pending == 0 &&
	    nbr->state != NBR_STA_XCHNG)
		nbr_fsm(nbr, NBR_EVT_LOAD_DONE);
}

void
ls_req_list_clr(struct nbr *nbr)
{
	struct lsa_entry	*le;

	while ((le = TAILQ_FIRST(&nbr->ls_req_list)) != NULL) {
		TAILQ_REMOVE(&nbr->ls_req_list, le, entry);
		free(le->le_lsa);
		free(le);
	}

	nbr->ls_req_cnt = 0;
	nbr->ls_req = NULL;
}

int
ls_req_list_empty(struct nbr *nbr)
{
	return (TAILQ_EMPTY(&nbr->ls_req_list));
}

/* timers */
/* ARGSUSED */
void
ls_req_tx_timer(int fd, short event, void *arg)
{
	struct nbr	*nbr = arg;
	struct timeval	 tv;

	switch (nbr->state) {
	case NBR_STA_DOWN:
	case NBR_STA_ATTEMPT:
	case NBR_STA_INIT:
	case NBR_STA_2_WAY:
	case NBR_STA_SNAP:
	case NBR_STA_XSTRT:
	case NBR_STA_XCHNG:
		return;
	case NBR_STA_LOAD:
		send_ls_req(nbr);
		break;
	case NBR_STA_FULL:
		return;
	default:
		log_debug("ls_req_tx_timer: unknown neighbor state, "
		    "neighbor ID %s", inet_ntoa(nbr->id));
		break;
	}

	/* reschedule lsreq_tx_timer */
	if (nbr->state == NBR_STA_LOAD) {
		timerclear(&tv);
		tv.tv_sec = nbr->iface->rxmt_interval;
		if (evtimer_add(&nbr->lsreq_tx_timer, &tv) == -1)
			fatal("ls_req_tx_timer");
	}
}

void
start_ls_req_tx_timer(struct nbr *nbr)
{
	struct timeval tv;

	if (nbr == nbr->iface->self)
		return;

	timerclear(&tv);
	if (evtimer_add(&nbr->lsreq_tx_timer, &tv) == -1)
		fatal("start_ls_req_tx_timer");
}

void
stop_ls_req_tx_timer(struct nbr *nbr)
{
	if (nbr == nbr->iface->self)
		return;

	if (evtimer_del(&nbr->lsreq_tx_timer) == -1)
		fatal("stop_ls_req_tx_timer");
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lsreq.c,v 1.8 2013/03/22 14:26:35 sthen Exp $ */
2
3			/*
4			* Copyright (c) 2004, 2005, 2007 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 <arpa/inet.h>
23			#include <stdlib.h>
24
25			#include "ospf6d.h"
26			#include "ospf6.h"
27			#include "log.h"
28			#include "ospfe.h"
29
30			extern struct imsgev *iev_rde;
31
32			/* link state request packet handling */
33			int
34			send_ls_req(struct nbr *nbr)
35			{
36			struct in6_addr dst;
37			struct ls_req_hdr ls_req_hdr;
38			struct lsa_entry le, nle;
39			struct ibuf *buf;
40			int ret;
41
42			if ((buf = ibuf_open(nbr->iface->mtu - sizeof(struct ip))) == NULL)
43			fatal("send_ls_req");
44
45			switch (nbr->iface->type) {
46			case IF_TYPE_POINTOPOINT:
47			inet_pton(AF_INET6, AllSPFRouters, &dst);
48			break;
49			case IF_TYPE_BROADCAST:
50			case IF_TYPE_NBMA:
51			case IF_TYPE_POINTOMULTIPOINT:
52			case IF_TYPE_VIRTUALLINK:
53			dst = nbr->addr;
54			break;
55			default:
56			fatalx("send_ls_req: unknown interface type");
57			}
58
59			/* OSPF header */
60			if (gen_ospf_hdr(buf, nbr->iface, PACKET_TYPE_LS_REQUEST))
61			goto fail;
62
63			/* LSA header(s) */
64			for (le = TAILQ_FIRST(&nbr->ls_req_list); le != NULL &&
65			buf->wpos + sizeof(struct ls_req_hdr) < buf->max; le = nle) {
66			nbr->ls_req = nle = TAILQ_NEXT(le, entry);
67			ls_req_hdr.zero = 0;
68			ls_req_hdr.type = le->le_lsa->type;
69			ls_req_hdr.ls_id = le->le_lsa->ls_id;
70			ls_req_hdr.adv_rtr = le->le_lsa->adv_rtr;
71			if (ibuf_add(buf, &ls_req_hdr, sizeof(ls_req_hdr)))
72			goto fail;
73			}
74
75			/* calculate checksum */
76			if (upd_ospf_hdr(buf, nbr->iface))
77			goto fail;
78
79			ret = send_packet(nbr->iface, buf->buf, buf->wpos, &dst);
80
81			ibuf_free(buf);
82			return (ret);
83			fail:
84			log_warn("send_ls_req");
85			ibuf_free(buf);
86			return (-1);
87			}
88
89			void
90			recv_ls_req(struct nbr nbr, char buf, u_int16_t len)
91			{
92			switch (nbr->state) {
93			case NBR_STA_DOWN:
94			case NBR_STA_ATTEMPT:
95			case NBR_STA_INIT:
96			case NBR_STA_2_WAY:
97			case NBR_STA_XSTRT:
98			case NBR_STA_SNAP:
99			log_debug("recv_ls_req: packet ignored in state %s, "
100			"neighbor ID %s", nbr_state_name(nbr->state),
101			inet_ntoa(nbr->id));
102			break;
103			case NBR_STA_XCHNG:
104			case NBR_STA_LOAD:
105			case NBR_STA_FULL:
106			imsg_compose_event(iev_rde, IMSG_LS_REQ, nbr->peerid,
107			0, -1, buf, len);
108			break;
109			default:
110			fatalx("recv_ls_req: unknown neighbor state");
111			}
112			}
113
114			/* link state request list */
115			void
116			ls_req_list_add(struct nbr nbr, struct lsa_hdr lsa)
117			{
118			struct lsa_entry *le;
119
120			if (lsa == NULL)
121			fatalx("ls_req_list_add: no LSA header");
122
123			if ((le = calloc(1, sizeof(*le))) == NULL)
124			fatal("ls_req_list_add");
125
126			TAILQ_INSERT_TAIL(&nbr->ls_req_list, le, entry);
127			le->le_lsa = lsa;
128			nbr->ls_req_cnt++;
129			}
130
131			struct lsa_entry *
132			ls_req_list_get(struct nbr nbr, struct lsa_hdr lsa_hdr)
133			{
134			struct lsa_entry *le;
135
136			TAILQ_FOREACH(le, &nbr->ls_req_list, entry) {
137			if ((lsa_hdr->type == le->le_lsa->type) &&
138			(lsa_hdr->ls_id == le->le_lsa->ls_id) &&
139			(lsa_hdr->adv_rtr == le->le_lsa->adv_rtr))
140			return (le);
141			}
142			return (NULL);
143			}
144
145			void
146			ls_req_list_free(struct nbr nbr, struct lsa_entry le)
147			{
148			if (nbr->ls_req == le) {
149			nbr->ls_req = TAILQ_NEXT(le, entry);
150			}
151
152			TAILQ_REMOVE(&nbr->ls_req_list, le, entry);
153			free(le->le_lsa);
154			free(le);
155			nbr->ls_req_cnt--;
156
157			/* received all requested LSA(s), send a new LS req */
158			if (nbr->ls_req != NULL &&
159			nbr->ls_req == TAILQ_FIRST(&nbr->ls_req_list)) {
160			start_ls_req_tx_timer(nbr);
161			}
162
163			/* we might not have received all DDs and are still in XCHNG */
164			if (ls_req_list_empty(nbr) && nbr->dd_pending == 0 &&
165			nbr->state != NBR_STA_XCHNG)
166			nbr_fsm(nbr, NBR_EVT_LOAD_DONE);
167			}
168
169			void
170			ls_req_list_clr(struct nbr *nbr)
171			{
172			struct lsa_entry *le;
173
174			while ((le = TAILQ_FIRST(&nbr->ls_req_list)) != NULL) {
175			TAILQ_REMOVE(&nbr->ls_req_list, le, entry);
176			free(le->le_lsa);
177			free(le);
178			}
179
180			nbr->ls_req_cnt = 0;
181			nbr->ls_req = NULL;
182			}
183
184			int
185			ls_req_list_empty(struct nbr *nbr)
186			{
187			return (TAILQ_EMPTY(&nbr->ls_req_list));
188			}
189
190			/* timers */
191			/* ARGSUSED */
192			void
193			ls_req_tx_timer(int fd, short event, void *arg)
194			{
195			struct nbr *nbr = arg;
196			struct timeval tv;
197
198			switch (nbr->state) {
199			case NBR_STA_DOWN:
200			case NBR_STA_ATTEMPT:
201			case NBR_STA_INIT:
202			case NBR_STA_2_WAY:
203			case NBR_STA_SNAP:
204			case NBR_STA_XSTRT:
205			case NBR_STA_XCHNG:
206			return;
207			case NBR_STA_LOAD:
208			send_ls_req(nbr);
209			break;
210			case NBR_STA_FULL:
211			return;
212			default:
213			log_debug("ls_req_tx_timer: unknown neighbor state, "
214			"neighbor ID %s", inet_ntoa(nbr->id));
215			break;
216			}
217
218			/* reschedule lsreq_tx_timer */
219			if (nbr->state == NBR_STA_LOAD) {
220			timerclear(&tv);
221			tv.tv_sec = nbr->iface->rxmt_interval;
222			if (evtimer_add(&nbr->lsreq_tx_timer, &tv) == -1)
223			fatal("ls_req_tx_timer");
224			}
225			}
226
227			void
228			start_ls_req_tx_timer(struct nbr *nbr)
229			{
230			struct timeval tv;
231
232			if (nbr == nbr->iface->self)
233			return;
234
235			timerclear(&tv);
236			if (evtimer_add(&nbr->lsreq_tx_timer, &tv) == -1)
237			fatal("start_ls_req_tx_timer");
238			}
239
240			void
241			stop_ls_req_tx_timer(struct nbr *nbr)
242			{
243			if (nbr == nbr->iface->self)
244			return;
245
246			if (evtimer_del(&nbr->lsreq_tx_timer) == -1)
247			fatal("stop_ls_req_tx_timer");
248			}