[mirror_frr.git] / ldpd / keepalive.c

/*	$OpenBSD$ */

/*
 * Copyright (c) 2009 Michele Marchetto <michele@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 <zebra.h>

#include "ldpd.h"
#include "ldpe.h"
#include "log.h"
#include "ldp_debug.h"

void
send_keepalive(struct nbr *nbr)
{
	struct ibuf	*buf;
	uint16_t	 size;

	size = LDP_HDR_SIZE + LDP_MSG_SIZE;
	if ((buf = ibuf_open(size)) == NULL)
		fatal(__func__);

	gen_ldp_hdr(buf, size);
	size -= LDP_HDR_SIZE;
	gen_msg_hdr(buf, MSG_TYPE_KEEPALIVE, size);

	debug_kalive_send("keepalive: lsr-id %s", inet_ntoa(nbr->id));

	evbuf_enqueue(&nbr->tcp->wbuf, buf);
	nbr->stats.kalive_sent++;
}

int
recv_keepalive(struct nbr *nbr, char *buf, uint16_t len)
{
	struct ldp_msg msg;

	memcpy(&msg, buf, sizeof(msg));
	if (len != LDP_MSG_SIZE) {
		session_shutdown(nbr, S_BAD_MSG_LEN, msg.id, msg.type);
		return (-1);
	}

	debug_kalive_recv("keepalive: lsr-id %s", inet_ntoa(nbr->id));

	if (nbr->state != NBR_STA_OPER)
		nbr_fsm(nbr, NBR_EVT_KEEPALIVE_RCVD);

	return (0);
}
Commit	Line	Data
8429abe0 RW	1	/* $OpenBSD$ */
	2
	3	/*
	4	* Copyright (c) 2009 Michele Marchetto <michele@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
eac6e3f0	19	#include <zebra.h>
8429abe0 RW	20
	21	#include "ldpd.h"
	22	#include "ldpe.h"
	23	#include "log.h"
eac6e3f0	24	#include "ldp_debug.h"
8429abe0 RW	25
	26	void
	27	send_keepalive(struct nbr *nbr)
	28	{
	29	struct ibuf *buf;
	30	uint16_t size;
	31
	32	size = LDP_HDR_SIZE + LDP_MSG_SIZE;
	33	if ((buf = ibuf_open(size)) == NULL)
	34	fatal(__func__);
	35
	36	gen_ldp_hdr(buf, size);
	37	size -= LDP_HDR_SIZE;
	38	gen_msg_hdr(buf, MSG_TYPE_KEEPALIVE, size);
	39
eac6e3f0 RW	40	debug_kalive_send("keepalive: lsr-id %s", inet_ntoa(nbr->id));
eac6e3f0 RW	41
8429abe0	42	evbuf_enqueue(&nbr->tcp->wbuf, buf);
0f7b5df9	43	nbr->stats.kalive_sent++;
8429abe0 RW	44	}
	45
	46	int
	47	recv_keepalive(struct nbr nbr, char buf, uint16_t len)
	48	{
	49	struct ldp_msg msg;
	50
	51	memcpy(&msg, buf, sizeof(msg));
	52	if (len != LDP_MSG_SIZE) {
	53	session_shutdown(nbr, S_BAD_MSG_LEN, msg.id, msg.type);
	54	return (-1);
	55	}
	56
eac6e3f0 RW	57	debug_kalive_recv("keepalive: lsr-id %s", inet_ntoa(nbr->id));
eac6e3f0 RW	58
8429abe0 RW	59	if (nbr->state != NBR_STA_OPER)
	60	nbr_fsm(nbr, NBR_EVT_KEEPALIVE_RCVD);
	61
	62	return (0);
	63	}